A hexahex is a figure made of six 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.
Most of the hexahex Galvagni and Reid figures were found by
Dr. Michael
Reid of the University of Central Florida.
Galvagni Figures
Here are the minimal known Galvagni figures for hexahexes:
Impossible
Hypersymmetric Variants
Reid Figures
Here are the minimal known Reid figures:
Unsolved
Impossible
Hypersymmetric Variants
Other Mirror Variants
Level Galvagni Figures
Here the hexahexes may be reflected and rotated 180° but
not 60° or 120°.