I've been fiddling...

[capri0mni]

... Making cut paper, five-pointed, stars from squares of paper.

Five folds, one straight cut. A video is here: https://youtu.be/iraWBwcOfU8 (haven't found a text, or diagram, or still picture, set of instructions yet). It really is ingenious. I wondered who figured out the math, 'cause drawing a pentagram by Euclid's method, using straight edge and compass, is mind-numbingly complicated.

Comments

[spiralsheep]

I love that sort of instructional vid. It's what t'interwebz does well. Thank you for the link.

[pebblerocker]

That's so clever! Thank you!

I know how to make a pentagon by tying a strip of paper in a knot. A simple knot comes out five-sided when tied in something flat. But how to fold a five-pointed star seemed impossible until I saw it done.