# Catalogue of Convex Polydrafters

## Introduction

A *polydrafter* is a polyform
made by joining equal *drafters,*
30°-60°-90° right triangles,
at their short legs, long legs, hypotenuses, or half hypotenuses.
Polydrafters whose cells belong to a common polyiamond (triangle) grid
are sometimes called *proper* polydrafters.
Polydrafters whose cells depart from the grid are called *extended*
polydrafters.
For more information see Wikipedia.
Below I show all convex proper polydrafters with from 1 to 7 cells.
The decompositions of the polydrafters into drafter cells are not
necessarily unique.
The counts and drawings do not include extended polydrafters.
If you find an error or omission, please write.

## Enumeration

In this enumeration, mirror images are treated as the same polydrafter.

Cells | Number |

1 | 1 |

2 | 4 |

3 | 3 |

4 | 7 |

5 | 7 |

6 | 13 |

7 | 9 |

8 | 15 |

9 | 9 |

10 | 14 |

11 | 12 |

12 | 27 |

13 | 19 |

14 | 29 |

15 | 26 |

16 | 29 |

17 | 20 |

18 | 36 |

19 | 26 |

20 | 48 |

## Monodrafter

## Didrafters

Puzzle: arrange the four convex proper didrafters to make a convex shape.

## Tridrafters

## Tetradrafters

Puzzle: arrange the seven convex proper tetradrafters to make a convex shape.

## Pentadrafters

## Hexadrafters

## Heptadrafters

Last revised 2023-06-11.

Back to Polyform Catalogues
< Polyform Curiosities

Col. George Sicherman
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