Explanations, Ellipse

Topic:
Ellipse

Explanation!

Use the scroll bar in the following applet to unfold the explanation. Point A is a dynamic point, if you haven't done so before, in stage 6 can move it around. In stage 7 you can also change the parameters. also note - Point O in the original applet (which appears here at the bottom of the page) corresponds to point below and point F in the original applet corresponds to

The original applet

given a circle with center O and F an arbitrary point in it. for every point A on the circle construct the perpendicular bisector to segment AF. what happens when we move point A?