Galvagni Figures for Rotary Polyominoes
A polyomino is 2-rotary if it looks the same
when rotated 180°.
It may also have mirror symmetry or 4-rotary symmetry (90 °).
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 known Galvagni Figures for
Thanks to Mark Smith for suggesting this page.
Last revised 2020-10-30.
Back to Galvagni Compatibility
Col. George Sicherman