Pentenn Oddities

A pentenn, or pentenneagon, is a figure formed by joining five regular enneagons edge to edge. An oddity is a figure with binary symmetry formed by an odd number of copies of a polyform.

Here are the minimal known oddities for pentenns. Please write if you find a smaller solution or solve an unsolved case.

Last revised 2011-06-05.

Back to Polyform Oddities.
Back to Polyform Curiosities.
Col. George Sicherman [ HOME | MAIL ]