Double-click on the movie to PLAY.

Click once to PAUSE.

RELOAD the page or double-click to return to the START of the movie.

C Change

Here we show how the ellipse (made with a 10 cm string) changes as AB changes.

What happens to the height? What happens to the width?

You can explore this further with this JAVA worksheet, where you can generate an ellipse after changing the value of AB.