title: How can I split a Polygon by a Line?
body: <p>As shown below, </p>
  
  <p><img src="https://imgur.com/aJ0vF.png"/></p>
  
  <p>Is it possible to split a Polygon by a Line? (into  two Polygons). If the line doesn't go all the way across the polygon it would fail.</p>
  
  <p>Is this possible? If so, how would I do this?</p>