Van Schooten's Ellipse
- Author:
- John Golden
A nifty construction of an ellipse by motion of a triangle along two axes.
Tumblr post about this: http://mathhombre.tumblr.com/post/65994692165/i-saw-this-great-gif-of-the-van-schooten-ellipse
More GeoGebra at mathhombre.blogspot.com