# 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.

## Galvagni Figures

Here are the known minimal Galvagni figures for octiamonds:

### Mirror Variants

## Reid Figures

Here are the minimal known Reid figures:

### Mirror Variants

*Last revised 2015-10-17.*

Back to Galvagni Compatibility
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Polyform Curiosities

Col. George Sicherman
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