Which regular polygons can be dissected into isosceles triangles by non-intersecting diagonals?

(In reply to Another n-gon by Dustin)

I did try a 9-gon, don't know why I dismissed it.

A do-decagon fails for the same reason as the hexagon, you have an interior equilateral.

Edited on January 21, 2012, 2:52 am

Posted by brianjn on 2012-01-21 02:49:14