In recreational mathematics, a **polydrafter** is a polyform with a triangle as the base form. The triangle has angles of 30°, 60° and 90°, like a drafting triangle—hence the name. The polydrafter was invented by Christopher Monckton, whose Eternity Puzzle was composed of 209 hexadrafters.

The term *polydrafter* was coined by Ed Pegg, Jr. The 14 tridrafters — all possible clusters of three drafters — make an excellent small puzzle that is surprisingly difficult to solve by hand.

## External links

- Weisstein, Eric W., "Polydrafter" from MathWorld.