Galvagni Figures & Reid Figures for Heptahexes

A heptahex is a figure made of seven regular hexagons 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 small known minimal Galvagni figures for heptahexes:

Here are the big ones:

And here are the minimal known Reid figures:

Last revised 2010-02-07.

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Col. George Sicherman [ HOME | MAIL ]