Math

Folding a golden rectangle

Posted by Dave Richeson on

Recently I wrote about the mathematics of cutting and folding paper and about the golden ratio, \displaystyle\phi=\frac{\sqrt{5}-1}{2}.

Here’s a video that brings these two ideas together. We see how to create a golden rectangle (a rectangle for which the ratio of the sides is \phi) by folding a piece of paper.

[via Anthony Brand’s maths blog]