News Math

Here’s how to make an origami torus with the fewest folds possible

To turn a paper sheet into a doughnutlike shape, you need to fold it into at least 16 triangles

It’s possible to make a torus by folding a paper sheet just 24 times. The torus has a hole running through the center of it (shown in a computer-generated video).

Richard Evan Schwartz

By Emily Conover

Folding a flat piece of paper into a torus — a shape with a hole in the middle — demands origami skill.