# Full Symmetry from Pairs of Hexiamonds

A *hexiamond* is a plane figure
formed by joining six equal equilateral triangles edge to edge.
Here I show the smallest known polyiamonds with full (snowflake) symmetry
that can be formed by copies of two hexiamonds, using at least
one of each.
If you find a smaller solution or solve the unsolved case,
please write.

See also Baiocchi Figures for Polyiamonds.

## Basic Solutions

Every pair of hexiamonds has a solution with at most 15 tiles.

Here I do not show holeless solutions that already appear above.

### Unsolved Holeless

Last revised 2024-06-24.

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Polyform Curiosities

Col. George Sicherman
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