Ellipse - The set of all points such that the sum of the distance from two points is a constant. [br][br]Position Vertice V, Foci F1, F2, and Center C. [br][br]Drag the point J along the slider segment to draw the ellipse. [br][br]Use Ctrl-F to clear the trace.

Jerel L. Welker[br]Lincoln Southwest High School Math Department[br]Lincoln, Nebraska[br]jwelker@lps.org