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      <title lang="eng">
        <p>     Area...Perimeter...Center of gravity</p>
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          <p>Area Polygon wrt vertices coordinates</p>
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        <description active="true" position="Top" lang="eng">
          <p>Perimeter  Polygon wrt vertices coordinates</p>
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        <input>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">P</e>
          <e type="operand">x</e>
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          <e type="operand">1</e>
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          <e type="operand">i</e>
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          <e type="bracket">(</e>
          <e type="operand">2</e>
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          <e type="operand">i</e>
          <e type="operand">1</e>
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          <e type="operand">1</e>
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          <e type="operand">1</e>
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      <math decimalPlaces="15">
        <description active="false" position="Right" lang="eng">
          <p>Center of gravity</p>
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          <e type="operand">y</e>
          <e type="function" args="2">Xo</e>
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          <e type="operand">y</e>
          <e type="function" args="2">A</e>
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          <e type="operand">1</e>
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          <e type="operand">x</e>
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          <e type="operand">1</e>
          <e type="operand">6</e>
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          <e type="operand">y</e>
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          <e type="operand">1</e>
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          <e type="operand">i</e>
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          <e type="operand">y</e>
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          <e type="operand">1</e>
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          <e type="operand">1</e>
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          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operand">x</e>
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          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
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          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">mat</e>
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      <area terminator="true" />
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      <p bold="true">Regular 'n' Polygon ...</p>
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      <description active="true" position="Right" lang="eng">
        <p>Number vertices in regular polygon</p>
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        <e type="operand">m</e>
        <e type="operand">5</e>
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        <p>Angle</p>
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        <e type="operand">n</e>
        <e type="function" args="1">θ</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
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        <e type="operand">m</e>
        <e type="operator" args="2">/</e>
        <e type="operand">n</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
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        <p>Radius</p>
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        <e type="operand">1</e>
        <e type="operator" args="2">:</e>
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    <math>
      <description active="true" position="Right" lang="eng">
        <p> ▲ ...▼ </p>
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        <e type="operand">up_dn</e>
        <e type="operand">0.25</e>
        <e type="operator" args="2">:</e>
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    <math>
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        <p>◄ ... ► </p>
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        <e type="operand">slide</e>
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
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        <e type="operand">Py</e>
        <e type="operand">m</e>
        <e type="function" preserve="true" args="1">Zeros</e>
        <e type="operator" args="2">:</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operand">m</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">i</e>
        <e type="operand">m</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">≡</e>
        <e type="operand">Px</e>
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        <e type="operand">Px</e>
        <e type="operand">1</e>
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        <e type="operator" args="2">:</e>
        <e type="operand">Py</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">Py</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
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        <e type="operand">Px</e>
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        <e type="operand">r</e>
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        <e type="operand">1</e>
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        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">X</e>
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        <e type="operand">X</e>
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      <result action="numeric">
        <e type="operand">0.059</e>
        <e type="operand">1.2011</e>
        <e type="operand">1.059</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.8378</e>
        <e type="operand">1.059</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.3378</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.059</e>
        <e type="operand">0.7011</e>
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        <e type="operand">0.75</e>
        <e type="operand">0.25</e>
        <e type="operand">0.059</e>
        <e type="operand">1.2011</e>
        <e type="operand">6</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="14">mat</e>
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    <math>
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        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">y</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
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  <region id="14" left="396" top="639" width="158" height="49" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Left" lang="eng">
        <p>AreaPerimeter</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">A</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">P</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">2.3776</e>
        <e type="operand">5.8779</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
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    <math exponentialThreshold="15">
      <description active="true" position="Right" lang="eng">
        <p>Center of gravity</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">0.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.25</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
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    <math>
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        <e type="operand">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Yo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
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    <plot type="2d" render="lines" scale_x="5.55991731349224" scale_y="5.55991731349224" scale_z="5.55991731349224" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">X</e>
        <e type="operand">Xo</e>
        <e type="operand">Yo</e>
        <e type="operand" style="string">+</e>
        <e type="operand">20</e>
        <e type="operand" style="string">red</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="18" left="18" top="792" width="189" height="49" color="#000000" bgColor="#ebebeb" fontSize="10">
    <math>
      <input>
        <e type="operand">θ</e>
        <e type="function" args="1">rot</e>
        <e type="operand">θ</e>
        <e type="function" preserve="true" args="1">cos</e>
        <e type="operand">θ</e>
        <e type="function" preserve="true" args="1">sin</e>
        <e type="operator" args="1">-</e>
        <e type="operand">θ</e>
        <e type="function" preserve="true" args="1">sin</e>
        <e type="operand">θ</e>
        <e type="function" preserve="true" args="1">cos</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="6">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="19" left="216" top="792" width="56" height="41" color="#000000" bgColor="#ebebeb" fontSize="10">
    <math>
      <input>
        <e type="operand">θ</e>
        <e type="operand">π</e>
        <e type="operator" args="1">-</e>
        <e type="operand">4</e>
        <e type="operator" args="2">/</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="20" left="18" top="846" width="112" height="26" color="#000000" bgColor="#ebebeb" fontSize="10">
    <math>
      <input>
        <e type="operand">Rot</e>
        <e type="operand">X</e>
        <e type="operand">θ</e>
        <e type="function" args="1">rot</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="21" left="18" top="882" width="248" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">Rot</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">y</e>
        <e type="operand">Rot</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="22" left="18" top="918" width="218" height="54" color="#000000" bgColor="#ffffff" fontSize="10">
    <math exponentialThreshold="15">
      <description active="true" position="Right" lang="eng">
        <p>Center of gravity</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">0.3536</e>
        <e type="operator" args="1">-</e>
        <e type="operand">7.8676</e>
        <e type="operand">10</e>
        <e type="operand">17</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">*</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
  </region>
  <region id="23" left="18" top="972" width="212" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Yo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="24" left="18" top="1008" width="240" height="158" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="lines" scale_x="5.55991731349224" scale_y="5.55991731349224" scale_z="5.55991731349224" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">Rot</e>
        <e type="operand">Xo</e>
        <e type="operand">Yo</e>
        <e type="operand" style="string">+</e>
        <e type="operand">20</e>
        <e type="operand" style="string">red</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="25" left="288" top="1062" width="158" height="49" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>AreaPerimeterindependent Rot</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">A</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">P</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">2.3776</e>
        <e type="operand">5.8779</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
  </region>
  <region id="26" left="288" top="1143" width="264" height="19" color="#000000" bgColor="#ffffff">
    <picture>
      <raw format="png" encoding="base64">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</raw>
    </picture>
  </region>
  <region id="27" top="1296" color="#ff0000" bgColor="#ebebeb">
    <area collapsed="true">
      <title lang="eng">
        <p>     Area...Perimeter...Center of gravity</p>
      </title>
    </area>
    <region id="28" left="45" top="1323" width="347" height="67" border="true" color="#000000" bgColor="#ffffc8" fontSize="10">
      <math fractionType="auto" decimalPlaces="6">
        <description active="true" position="Top" lang="eng">
          <p>Area Polygon wrt vertices coordinates</p>
        </description>
        <input>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">A</e>
          <e type="operand">1</e>
          <e type="operand">2</e>
          <e type="operator" args="2">/</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operand">x</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="4">sum</e>
          <e type="operator" args="2">*</e>
          <e type="function" preserve="true" args="1">abs</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="29" left="396" top="1323" width="380" height="65" border="true" color="#000000" bgColor="#ffffc8" fontSize="10">
      <math fractionType="auto" decimalPlaces="6">
        <description active="true" position="Top" lang="eng">
          <p>Perimeter  Polygon wrt vertices coordinates</p>
        </description>
        <input>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">P</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operand">2</e>
          <e type="operator" args="2">^</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="1">sqrt</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operand">x</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="4">sum</e>
          <e type="operator" args="2">:</e>
        </input>
      </math>
    </region>
    <region id="30" left="45" top="1422" width="511" height="127" border="true" color="#000000" bgColor="#ffffc8" fontSize="10">
      <math decimalPlaces="15">
        <description active="false" position="Right" lang="eng">
          <p>Center of gravity</p>
        </description>
        <input>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">Xo</e>
          <e type="operand">1</e>
          <e type="operand">6</e>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">A</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">/</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operand">x</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="4">sum</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">Yo</e>
          <e type="operand">1</e>
          <e type="operand">6</e>
          <e type="operand">x</e>
          <e type="operand">y</e>
          <e type="function" args="2">A</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">/</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">+</e>
          <e type="bracket">(</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operand">x</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operator" args="2">+</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operand">y</e>
          <e type="operand">i</e>
          <e type="function" preserve="true" args="2">el</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">-</e>
          <e type="bracket">(</e>
          <e type="operator" args="2">*</e>
          <e type="operand">i</e>
          <e type="operand">1</e>
          <e type="operand">x</e>
          <e type="function" preserve="true" args="1">rows</e>
          <e type="operand">1</e>
          <e type="operator" args="2">-</e>
          <e type="function" preserve="true" args="4">sum</e>
          <e type="operator" args="2">*</e>
          <e type="operator" args="2">:</e>
          <e type="operand">2</e>
          <e type="operand">1</e>
          <e type="function" preserve="true" args="4">mat</e>
        </input>
      </math>
    </region>
    <region id="31" top="1557" color="#000000" bgColor="#ffffff">
      <area terminator="true" />
    </region>
  </region>
  <region id="32" left="27" top="1584" width="43" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Number vertices in regular polygon</p>
      </description>
      <input>
        <e type="operand">m</e>
        <e type="operand">6</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="33" left="378" top="1584" width="379" height="74" color="#000000" bgColor="#e1ffff" fontSize="20">
    <text lang="eng">
      <p bold="true">Jesus Project 20220801...linear side solving</p>
    </text>
  </region>
  <region id="34" left="27" top="1611" width="97" height="41" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Angle</p>
      </description>
      <input>
        <e type="operand">n</e>
        <e type="function" args="1">θ</e>
        <e type="operand">2</e>
        <e type="operand">π</e>
        <e type="operator" args="2">*</e>
        <e type="operand">m</e>
        <e type="operator" args="2">/</e>
        <e type="operand">n</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="35" left="216" top="1611" width="43" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Radius</p>
      </description>
      <input>
        <e type="operand">r</e>
        <e type="operand">1</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="36" left="27" top="1656" width="202" height="232" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">Px</e>
        <e type="operand">m</e>
        <e type="function" preserve="true" args="1">Zeros</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Py</e>
        <e type="operand">m</e>
        <e type="function" preserve="true" args="1">Zeros</e>
        <e type="operator" args="2">:</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operand">m</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
        <e type="bracket">(</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">i</e>
        <e type="operand">m</e>
        <e type="operand">1</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">≡</e>
        <e type="operand">Px</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">Px</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Py</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">Py</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
        <e type="operand">Px</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">r</e>
        <e type="operand">i</e>
        <e type="function" args="1">θ</e>
        <e type="function" preserve="true" args="1">cos</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Py</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">r</e>
        <e type="operand">i</e>
        <e type="function" args="1">θ</e>
        <e type="function" preserve="true" args="1">sin</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
        <e type="function" preserve="true" args="3">if</e>
        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">line</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">X</e>
        <e type="operand">Px</e>
        <e type="operand">Py</e>
        <e type="function" preserve="true" args="2">augment</e>
        <e type="operator" args="2">:</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">line</e>
      </input>
    </math>
  </region>
  <region id="37" left="288" top="1692" width="207" height="144" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">X</e>
      </input>
      <result action="numeric">
        <e type="operand">0.5</e>
        <e type="operand">0.866</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.866</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.866</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.5</e>
        <e type="operand">0.866</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1</e>
        <e type="operand">2.4492</e>
        <e type="operand">10</e>
        <e type="operand">16</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">^</e>
        <e type="operator" args="2">*</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.5</e>
        <e type="operand">0.866</e>
        <e type="operand">7</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="16">mat</e>
      </result>
    </math>
  </region>
  <region id="38" left="36" top="1890" width="240" height="158" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="lines" scale_x="6.66022494983236" scale_y="6.66022494983236" scale_z="6.66022494983236" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">X</e>
      </input>
    </plot>
  </region>
  <region id="39" left="315" top="1890" width="132" height="165" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">vx1</e>
        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vx2</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vx3</e>
        <e type="operand">X</e>
        <e type="operand">3</e>
        <e type="operand">4</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vx4</e>
        <e type="operand">X</e>
        <e type="operand">4</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vx5</e>
        <e type="operand">X</e>
        <e type="operand">5</e>
        <e type="operand">6</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vx6</e>
        <e type="operand">X</e>
        <e type="operand">6</e>
        <e type="operand">7</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="8">sys</e>
      </input>
    </math>
  </region>
  <region id="40" left="513" top="1890" width="132" height="165" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">vy1</e>
        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vy2</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">3</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vy3</e>
        <e type="operand">X</e>
        <e type="operand">3</e>
        <e type="operand">4</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vy4</e>
        <e type="operand">X</e>
        <e type="operand">4</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vy5</e>
        <e type="operand">X</e>
        <e type="operand">5</e>
        <e type="operand">6</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vy6</e>
        <e type="operand">X</e>
        <e type="operand">6</e>
        <e type="operand">7</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="8">sys</e>
      </input>
    </math>
  </region>
  <region id="41" left="36" top="2070" width="236" height="129" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">s1</e>
        <e type="operand">vx1</e>
        <e type="operand">vy1</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">s2</e>
        <e type="operand">vx2</e>
        <e type="operand">vy2</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">s3</e>
        <e type="operand">vx3</e>
        <e type="operand">vy3</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">s4</e>
        <e type="operand">vx4</e>
        <e type="operand">vy4</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">s5</e>
        <e type="operand">vx5</e>
        <e type="operand">vy5</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">x</e>
        <e type="function" args="1">s6</e>
        <e type="operand">vx6</e>
        <e type="operand">vy6</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="8">sys</e>
      </input>
    </math>
  </region>
  <region id="42" left="324" top="2070" width="296" height="291" color="#000000" bgColor="#ebebeb" fontSize="10">
    <math optimize="2">
      <description active="true" position="Right" lang="eng">
        <p>... NUMERIC ...</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">P</e>
        <e type="operand">x</e>
        <e type="function" args="1">s1</e>
        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand" style="string" />
        <e type="function" preserve="true" args="3">cases</e>
        <e type="operand">x</e>
        <e type="function" args="1">s2</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">X</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand" style="string" />
        <e type="function" preserve="true" args="3">cases</e>
        <e type="operand">x</e>
        <e type="function" args="1">s3</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">X</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand" style="string" />
        <e type="function" preserve="true" args="3">cases</e>
        <e type="operand">x</e>
        <e type="function" args="1">s4</e>
        <e type="operand">X</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">X</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand" style="string" />
        <e type="function" preserve="true" args="3">cases</e>
        <e type="operand">x</e>
        <e type="function" args="1">s5</e>
        <e type="operand">x</e>
        <e type="operand">X</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">X</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand" style="string" />
        <e type="function" preserve="true" args="3">cases</e>
        <e type="operand">x</e>
        <e type="function" args="1">s6</e>
        <e type="operand">X</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operand">x</e>
        <e type="operand">X</e>
        <e type="operand">7</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
        <e type="operator" args="2">*</e>
        <e type="operand" style="string" />
        <e type="function" preserve="true" args="3">cases</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="8">sys</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="43" left="36" top="2232" width="43" height="24" color="#000000" bgColor="#ffffc8" fontSize="10">
    <math>
      <input>
        <e type="operand">j</e>
        <e type="operand">2</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="44" left="108" top="2232" width="77" height="24" color="#000000" bgColor="#ffffc8" fontSize="10">
    <math>
      <input>
        <e type="operand">u</e>
        <e type="operand">0.75</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="45" left="36" top="2268" width="120" height="34" color="#000000" bgColor="#ffffc8" fontSize="10">
    <math>
      <input>
        <e type="operand">u</e>
        <e type="function" args="1">P</e>
        <e type="operand">j</e>
        <e type="function" preserve="true" args="2">el</e>
      </input>
      <result action="numeric">
        <e type="operand">0.433</e>
      </result>
    </math>
  </region>
  <region id="46" left="36" top="2304" width="240" height="158" color="#000000" bgColor="#ffffc8" fontSize="10">
    <plot type="2d" render="lines" scale_x="7.40024994425817" scale_y="7.40024994425817" scale_z="7.40024994425817" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <description active="true" position="Top" lang="eng">
        <p>Value the side of the polygon</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">P</e>
        <e type="operand">j</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">u</e>
        <e type="operand">u</e>
        <e type="function" args="1">P</e>
        <e type="operand">j</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand" style="string">+</e>
        <e type="operand">15</e>
        <e type="operand" style="string">red</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="47" left="324" top="2367" width="240" height="158" color="#000000" bgColor="#ebebeb" fontSize="10">
    <plot type="2d" render="lines" scale_x="5.47580732741346" scale_y="5.47580732741345" scale_z="8.01712950806604" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">x</e>
        <e type="function" args="1">P</e>
      </input>
    </plot>
  </region>
  <region id="48" left="900" top="2376" width="50" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">≤</e>
      </input>
    </math>
  </region>
  <region id="49" left="918" top="2403" width="67" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">≤</e>
      </input>
    </math>
  </region>
  <region id="50" left="918" top="2430" width="58" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">1</e>
        <e type="operator" args="1">-</e>
        <e type="operand">x</e>
        <e type="operator" args="2">≥</e>
        <e type="bracket">(</e>
      </input>
    </math>
  </region>
  <region id="51" left="36" top="2592" width="198" height="26" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Line Equation</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">m_a</e>
        <e type="operand">c</e>
        <e type="function" args="3">y_l</e>
        <e type="operand">m_a</e>
        <e type="operand">x</e>
        <e type="operator" args="2">*</e>
        <e type="operand">c</e>
        <e type="operator" args="2">+</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="52" left="414" top="2592" width="85" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Ratio of line</p>
      </description>
      <input>
        <e type="operand">m_a</e>
        <e type="operand">0.85</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="53" left="36" top="2628" width="118" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Number of line in the interval</p>
      </description>
      <input>
        <e type="operand">space_m</e>
        <e type="operand">0.25</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="54" left="414" top="2628" width="110" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Number of points</p>
      </description>
      <input>
        <e type="operand">space_x</e>
        <e type="operand">0.1</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="55" left="36" top="2664" width="269" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>Spacing between the line</p>
      </description>
      <input>
        <e type="operand">cc</e>
        <e type="operand">1.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1.25</e>
        <e type="operand">1.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">space_m</e>
        <e type="operator" args="2">+</e>
        <e type="function" preserve="true" args="3">range</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="56" left="36" top="2700" width="269" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>X position</p>
      </description>
      <input>
        <e type="operand">xx</e>
        <e type="operand">1.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">1.25</e>
        <e type="operand">1.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">space_x</e>
        <e type="operator" args="2">+</e>
        <e type="function" preserve="true" args="3">range</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="57" left="36" top="2745" width="340" height="145" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">mn</e>
        <e type="operand">cc</e>
        <e type="function" preserve="true" args="1">length</e>
        <e type="operator" args="2">:</e>
        <e type="operand">PL</e>
        <e type="operand">mn</e>
        <e type="function" preserve="true" args="1">Zeros</e>
        <e type="operator" args="2">:</e>
        <e type="operand">i</e>
        <e type="operand">1</e>
        <e type="operand">mn</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">temp</e>
        <e type="operand">cc</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operator" args="2">:</e>
        <e type="operand">PL</e>
        <e type="operand">i</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">xx</e>
        <e type="operand">xx</e>
        <e type="operand">m_a</e>
        <e type="operand">temp</e>
        <e type="function" args="3">y_l</e>
        <e type="function" preserve="true" args="1">vectorize</e>
        <e type="function" preserve="true" args="2">augment</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">line</e>
        <e type="function" preserve="true" args="3">for</e>
        <e type="operand">PL</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="6">line</e>
      </input>
    </math>
  </region>
  <region id="58" left="441" top="2799" width="125" height="41" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">axes</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="operator" args="2">/</e>
        <e type="operator" args="1">-</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="59" left="36" top="2889" width="126" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>lines that belong to the system</p>
      </description>
      <input>
        <e type="operand">PL</e>
        <e type="operand">PL</e>
        <e type="operand">2</e>
        <e type="operand">10</e>
        <e type="function" preserve="true" args="2">range</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="60" left="432" top="2889" width="43" height="24" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>single out a bisecting line</p>
      </description>
      <input>
        <e type="operand">j</e>
        <e type="operand">7</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="61" left="36" top="2925" width="357" height="294" color="#000000" bgColor="#ffffff" fontSize="10">
    <xyplot width="347" height="286" smoothing="false" points="100">
      <propertiessource index="1" sourcetype="PropertyGrid" />
      <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" />
      <xaxes xmin="-2.467399" xmax="2.717116" xtick="0.5" numberformat="General" decimalplaces="3" />
      <yaxes ymin="-2.220554" ymax="1.899745" ytick="1" numberformat="General" decimalplaces="3" />
      <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" numberformat="General" decimalplaces="3" />
      <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
      <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="x" ylabel="y" y2label="y2" />
      <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
      <traces>
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Blue" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Red" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
      </traces>
      <input>
        <e type="operand">PL</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </xyplot>
  </region>
  <region id="62" left="432" top="2925" width="120" height="32" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">single</e>
        <e type="operand">PL</e>
        <e type="operand">j</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="63" left="396" top="2961" width="303" height="260" color="#000000" bgColor="#ffffff" fontSize="10">
    <xyplot width="293" height="252" smoothing="false" points="100">
      <propertiessource index="1" sourcetype="PropertyGrid" />
      <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" />
      <xaxes xmin="-2" xmax="2" xtick="0.5" numberformat="General" decimalplaces="3" />
      <yaxes ymin="-1.5" ymax="1.5" ytick="0.5" numberformat="General" decimalplaces="3" />
      <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" numberformat="General" decimalplaces="3" />
      <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
      <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="x" ylabel="y" y2label="y2" />
      <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
      <traces>
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Blue" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Red" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Green" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
      </traces>
      <input>
        <e type="operand">single</e>
        <e type="operand">X</e>
        <e type="operand">axes</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="5">sys</e>
      </input>
    </xyplot>
  </region>
  <region id="64" left="45" top="3285" width="325" height="52" color="#000000" bgColor="#ffffff" fontSize="10">
    <math optimize="2">
      <input>
        <e type="operand">vx</e>
        <e type="operand">single</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">vy</e>
        <e type="operand">single</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operand">x</e>
        <e type="function" args="1">s</e>
        <e type="operand">vx</e>
        <e type="operand">vy</e>
        <e type="operand">x</e>
        <e type="function" preserve="true" args="3">linterp</e>
        <e type="operator" args="2">:</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </math>
  </region>
  <region id="65" left="45" top="3339" width="423" height="59" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Right" lang="eng">
        <p>range wisely "solve"wrt the radius ...</p>
      </description>
      <input>
        <e type="operand">sol</e>
        <e type="operand">x</e>
        <e type="function" args="1">s3</e>
        <e type="operand">x</e>
        <e type="function" args="1">s</e>
        <e type="operator" args="2">-</e>
        <e type="operand">x</e>
        <e type="operand">1.25</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.5</e>
        <e type="operator" args="1">-</e>
        <e type="function" preserve="true" args="4">solve</e>
        <e type="operand">x</e>
        <e type="function" args="1">s</e>
        <e type="operand">X</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operator" args="2">-</e>
        <e type="operand">x</e>
        <e type="operand">0</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">solve</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
        <e type="operator" args="2">:</e>
      </input>
      <result action="numeric">
        <e type="operand">0.8644</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.4306</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </result>
    </math>
  </region>
  <region id="66" left="252" top="3402" width="201" height="171" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">concave</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" args="1">s</e>
        <e type="operand">sol</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">sol</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" args="1">s</e>
        <e type="operand">X</e>
        <e type="operand">4</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">4</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">5</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">6</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">6</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" args="1">s</e>
        <e type="operand">6</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="14">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="67" left="45" top="3411" width="192" height="145" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">convex</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" args="1">s</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">X</e>
        <e type="operand">3</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">sol</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">sol</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" args="1">s</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="operand">sol</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">el</e>
        <e type="function" args="1">s</e>
        <e type="operand">5</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="12">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="68" left="477" top="3456" width="290" height="68" color="#000000" bgColor="#e1ffff" fontSize="12">
    <text lang="eng">
      <p>convex/concave ... specific for this particular line.Reconstruct for other lines.</p>
    </text>
  </region>
  <region id="69" left="45" top="3600" width="303" height="260" color="#000000" bgColor="#ffffff" fontSize="10">
    <xyplot width="293" height="252" smoothing="false" points="100">
      <propertiessource index="1" sourcetype="PropertyGrid" />
      <grid gridcolor="LightGray" gridpattern="Dash" gridthickness="1" isxgrid="true" isygrid="true" />
      <xaxes xmin="-1.534186" xmax="1.783903" xtick="0.5" numberformat="General" decimalplaces="3" />
      <yaxes ymin="-1.4789" ymax="1.158091" ytick="1" numberformat="General" decimalplaces="3" />
      <y2axes isy2axis="false" y2min="-1" y2max="1" y2tick="0.5" numberformat="General" decimalplaces="3" />
      <title2d title="" titlefont="Arial, 10pt" titlefontcolor="Black" />
      <xylabel labelfont="Arial, 10pt" labelfontcolor="Black" tickfont="Arial, 8pt" tickfontcolor="Black" xlabel="x" ylabel="y" y2label="y2" />
      <legend isbordervisible="true" islegendvisible="false" legendbackcolor="White" legendbordercolor="Black" legendfont="Arial, 8pt" legendposition="NorthEast" textcolor="Black" />
      <traces>
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Blue" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Red" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
        <trace seriesname="" isy2data="false" isvisible="true" plotmethod="Lines" linecolor="Green" linethickness="1" linepattern="Solid" symbolsize="8" symboltype="None" symbolborderthickness="1" symbolbordercolor="Black" symbolfillcolor="White" />
      </traces>
      <input>
        <e type="operand">single</e>
        <e type="operand">X</e>
        <e type="operand">axes</e>
        <e type="operand">3</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="5">sys</e>
      </input>
    </xyplot>
  </region>
  <region id="70" left="387" top="3600" width="240" height="158" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="lines" scale_x="7.03756406376255" scale_y="7.03756406376255" scale_z="7.03756406376255" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">convex</e>
        <e type="operand">concave</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="71" left="45" top="3933" width="296" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">convex</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">y</e>
        <e type="operand">convex</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="72" left="45" top="3978" width="158" height="49" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Left" lang="eng">
        <p>AreaPerimeter</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">A</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">P</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">0.6296</e>
        <e type="operand">3.9014</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
  </region>
  <region id="73" left="432" top="3978" width="175" height="49" color="#000000" bgColor="#ffffff" fontSize="10">
    <math exponentialThreshold="15">
      <description active="true" position="Right" lang="eng">
        <p>Center of gravity</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">0.4002</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.4453</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
  </region>
  <region id="74" left="432" top="4032" width="212" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Yo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="75" left="45" top="4068" width="268" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">upper</e>
        <e type="operand">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Yo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="76" left="432" top="4077" width="240" height="158" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="lines" scale_x="5.55991731349224" scale_y="5.55991731349224" scale_z="5.55991731349224" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">convex</e>
        <e type="operand">Xo</e>
        <e type="operand">Yo</e>
        <e type="operand" style="string">+</e>
        <e type="operand">20</e>
        <e type="operand" style="string">red</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="77" top="4293" color="#000000" bgColor="#c0c0c0">
    <area single="true" collapsed="true" />
  </region>
  <region id="78" left="27" top="4338" width="314" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">x</e>
        <e type="operand">concave</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">y</e>
        <e type="operand">concave</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="2">col</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="79" left="27" top="4392" width="158" height="49" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <description active="true" position="Left" lang="eng">
        <p>AreaPerimeter</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">A</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">P</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">1.9384</e>
        <e type="operand">5.465</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
  </region>
  <region id="80" left="432" top="4392" width="175" height="49" color="#000000" bgColor="#ffffff" fontSize="10">
    <math exponentialThreshold="15">
      <description active="true" position="Right" lang="eng">
        <p>Center of gravity</p>
      </description>
      <input>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
      <result action="numeric">
        <e type="operand">0.12</e>
        <e type="operand">0.1536</e>
        <e type="operator" args="1">-</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">mat</e>
      </result>
    </math>
  </region>
  <region id="81" left="432" top="4446" width="212" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Yo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
      </input>
    </math>
  </region>
  <region id="82" left="27" top="4482" width="268" height="29" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">lower</e>
        <e type="operand">Xo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Xo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">Yo</e>
        <e type="operand">x</e>
        <e type="operand">y</e>
        <e type="function" args="2">Yo</e>
        <e type="operator" args="2">:</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="4">mat</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="83" left="432" top="4482" width="240" height="158" color="#000000" bgColor="#ffffff" fontSize="10">
    <plot type="2d" render="lines" scale_x="5.55991731349224" scale_y="5.55991731349224" scale_z="5.55991731349224" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="0" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">concave</e>
        <e type="operand">Xo</e>
        <e type="operand">Yo</e>
        <e type="operand" style="string">+</e>
        <e type="operand">20</e>
        <e type="operand" style="string">red</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="4">sys</e>
      </input>
    </plot>
  </region>
  <region id="84" left="27" top="4572" width="345" height="45" color="#000000" bgColor="#ffffff" fontSize="10">
    <math>
      <input>
        <e type="operand">S</e>
        <e type="operand">upper</e>
        <e type="operand">lower</e>
        <e type="function" preserve="true" args="2">stack</e>
        <e type="operator" args="2">:</e>
      </input>
      <result action="numeric">
        <e type="operand">0.4002</e>
        <e type="operator" args="1">-</e>
        <e type="operand">0.4453</e>
        <e type="operand">0.12</e>
        <e type="operand">0.1536</e>
        <e type="operator" args="1">-</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="6">mat</e>
      </result>
    </math>
  </region>
  <region id="85" left="36" top="4707" width="311" height="121" color="#000000" bgColor="#ebebeb" fontSize="10">
    <math>
      <input>
        <e type="operand">project</e>
        <e type="operand">convex</e>
        <e type="operand">concave</e>
        <e type="operand">S</e>
        <e type="operand">S</e>
        <e type="operand">1</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">S</e>
        <e type="operand">1</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand" style="string">+</e>
        <e type="operand">10</e>
        <e type="operand" style="string">black</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">S</e>
        <e type="operand">2</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand">S</e>
        <e type="operand">2</e>
        <e type="operand">2</e>
        <e type="function" preserve="true" args="3">el</e>
        <e type="operand" style="string">+</e>
        <e type="operand">10</e>
        <e type="operand" style="string">back</e>
        <e type="operand">1</e>
        <e type="operand">5</e>
        <e type="function" preserve="true" args="7">mat</e>
        <e type="operand">5</e>
        <e type="operand">1</e>
        <e type="function" preserve="true" args="7">sys</e>
        <e type="operator" args="2">:</e>
      </input>
    </math>
  </region>
  <region id="86" left="396" top="4707" width="281" height="222" color="#000000" bgColor="#ebebeb" fontSize="10">
    <plot type="2d" render="lines" scale_x="12.3427992900596" scale_y="12.3427992900596" scale_z="12.3427992900596" rotate_x="0" rotate_y="0" rotate_z="0" transpose_x="-1" transpose_y="0" transpose_z="0">
      <input>
        <e type="operand">project</e>
      </input>
    </plot>
  </region>
</regions>