# Galvagni Figures for Rotary Polyiamonds

A polyiamond is *2-rotary* if it looks the same
when rotated 180°,
and *3-rotary* if it looks the same
when rotated 120°,
It may also have mirror symmetry or 6-rotary symmetry (60 °).
A *Galvagni Figure*
is a shape that can be tiled by a polyform in two or more ways.
The ways may be isomorphic, so long as they have different positions.
They were proposed by Jeremy Galvagni and first appeared
at Erich Friedman's site Math Magic.

Here I show minimal known Galvagni Figures for
rotary polyiamonds.
Thanks to Mark Smith for suggesting this page.

## Moniamond

### No Solution

## Diamond

## Tetriamonds

### No Solution

## Hexiamonds

### No Solution

## Heptiamond

## Octiamonds

### No Solution

## Enneiamond

### No Solution

## Dekiamonds

### No Solution

## Dodekiamonds

### No Solution

*Last revised 2020-12-07.*

Back to Galvagni Compatibility
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Polyform Compatibility
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Polyform Curiosities

Col. George Sicherman
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