title: Drawing a line inside an circle
body: <p>I have a circle and want to draw a line inside that circle from the center (50|50) to the edge of the circle through the point i clicked on. </p>
  
  <p>To test things, I already added this to my <code>Circle.MouseDown</code> event which draws the line from the center to the point I clicked on:</p>
  
  <pre><code>var PosX2 = e.GetPosition(MyCircle).X;
  var PosY2 = e.GetPosition(MyCircle).Y;
  
  CircleLine.X1 = 50;
  CircleLine.Y1 = 50;
  CircleLine.X2 = PosX2;
  CircleLine.Y2 = PosY2;
  </code></pre>
  
  <p>What do I need to add to "stretch" my line to the edge of the Circle?</p>