- The falling ladder

- Building a transom (does the carpenter's method of laying out an oval give an ellipse?)

- Viewing an ellipse (is an ellipse viewed from any perspective also an ellipse?)

- The infinite cone (see how the limit of the cone theory as the cone becomes longer is the cylindrical theory)
- Making ovals (are there ways of defining ovals other than ellipses?)

© 1996-2008 Institute for Studies in Educational Mathematics

Please do not reproduce without permission.

http://www.edmath.org/MATtours/ellipses/

Last updated: 10 June, 2008

MATtours project team led by Larry Copes