Making a Rectangle from Different Didrafters

Introduction

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 polydrafters. 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.

1×√3

2×√3

3×√3

4×√3

5×√3

6×√3

3×2√3

4×2√3

Last revised 2020-07-08.


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Col. George Sicherman [ HOME | MAIL ]