# Multiple Compatibility for Polyiamonds

## Introduction

A set of polyforms is *compatible*
if there exists a figure that each of them can tile.
Here are minimal figures that can be tiled by a given number of
*n*-iamonds.
If you find a smaller solution or one that can be tiled by more
*n*-iamonds, please write.
For polyominoes see Multiple Compatibility
for Polyominoes.
For polyhexes see Multiple Compatibility
for Polyhexes.

## Tetriamonds

### 2 Tetriamonds

### 3 Tetriamonds

## Pentiamonds

### 3 Pentiamonds

### 4 Pentiamonds

## Hexiamonds

### 5 Hexiamonds

#### 6E, 6L

#### 6O

### 6 Hexiamonds

### 7 Hexiamonds

#### Holeless

### 8 Hexiamonds

## Heptiamonds

### 5 Heptiamonds

### 6 Heptiamonds

### 9 Heptiamonds

Last revised 2020-08-14.

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Col. George Sicherman
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