Tangle Font

by Erik Demaine, Martin Demaine, and Ronald Taylor, 2016


Each letter in a font is folded from a Tangle toy of identical length, that is, a closed loop of rigid quarter-circles connected by twist hinges. Two fonts are available, of lengths 52 and 56.

At the bottom is a puzzle font, presenting the geometries as a sequence of N, E, W, S steps.

An intriguing open question, described in our paper “Tangled Tangles”, is whether it is possible to reconfigure between all letters in each font via simple moves (“reflection” and “translation”). This problem is related to flat-state connectivity of fixed-angle chains. You can experiment with this problem using our Tangle Designer app.

Check out other mathematical and puzzle fonts. • Feedback or not working? Email Erik.