Galvagni Figures & Reid Figures for Octiamonds

An octiamond is a figure made of eight equilateral triangles joined edge to edge. A Galvagni figure is a figure that can be tiled by a polyform in more than one way—a kind of self-compatibility figure. A Reid figure is a Galvagni figure without holes.

Most of the octiamond Galvagni and Reid figures were found by Dr. Michael Reid of the University of Central Florida. Here are the known minimal Galvagni figures for octiamonds:

And here are the minimal known Reid figures:

Back to Polyform Curiosities.

Col. G. L. Sicherman [ HOME | MAIL ]