Galvagni Figures and Reid Figures for Enneiamonds
An enneiamond is a figure made of nine 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.
Here are the known minimal Galvagni figures for enneiamonds:
Last revised 2010-09-30.
And here are the minimal known Reid figures:
Back to Galvagni Compatibility
Col. George Sicherman