Making a Rectangle from Different Didrafters
A didrafter is a polyform
made by joining two drafters,
30°-60°-90° right triangles,
at their short legs, long legs, hypotenuses, or half hypotenuses.
Polydrafters joined on the polyiamond (triangle) grid
are called proper polydrafters.
Polydrafters whose cells depart from the grid are called extended
Here are the 13 didrafters, proper and extended:
Below I show how to arrange a set of different
didrafters to make a rectangle.
Some sets have more than one tiling.
Last revised 2020-07-08.
Back to Polyform Tiling
< Polyform Curiosities
Col. George Sicherman