Return to 3D Solids

Origami Icosahedron

Annie Perkins (@anniek_p) shared (Twitter) how to make an icosahedron out of paper.  (BTW, her video really helps.)
I had to make one.
It turns out that the edges can be colored, using 5 colors, so that the 5 edges meeting at every vertex are all different.
I used 5 colors. Picked Easter colors!  6 of each to make the 30 edges.  (Didn’t take too long. My wonderful wife, Marilyn, helped.)  I used 4″ by 4″ scrapbooking paper.
Here are my pics.  (Click to enlarge.)
At a particularly nice 5-coloring is described which I used.  It uses a very simple-to-follow-rule.
More here and here.