Poncelet's Porism


sides in the polygon
You can alter the number of sides or the center of the incircle.
Control rotation with the animation or rotation buttons.
.
To make a star polygon
Skip 1 2 3 4 5 vertices
The Star Polygons rotate like the original polygons and the new incircles are consistant.
.
animation speed
(repeated taps while animated)
.

Wikipedia article on Poncelet's closure theorem
Mathworld article on Poncelet's Porism
Free javascript course and text editor
my index page
Happy to chat Bob Allanson

web counter
web counter