Pythagoras tree

<canvas id="paint" width="500" height="500"></canvas>

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  <p>Change some Settings:</p>

<form id="options">

  <label>Iteration:</label><input id="iteration" type="range" min="0" max="20" value="10">

    <label>Size:</label><input id="size" type="range" min="10" max="80" value="50">

    <label>Random:</label><input id="random" type="checkbox" checked="">

</form>

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