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You don't have to use gyroelongation
(lemmy.ml)
cross-posted from: https://lemmy.ml/post/14733630
image description
Standard "they don't know" meme format, featuring line art of "That Feel Guy" wearing a party hat standing in a corner while other people are dancing. An image of an icosahedron formed by three mutually perpendicular golden ratio rectangles sits in front of That Feel Guy. The caption text says "They don't know that three mutually perpendicular golden ratio rectangles, with edges connecting their corners, form a regular icosahedron."https://en.wikipedia.org/w/index.php?title=Regular_icosahedron&oldid=1219666251#Construction
I knew this!
On the off chance that one of you needs to model an Icosahedron / D20 in CAD, constructing three golden rectangles is often the easiest way to go, as it removes the need for calculating face angles.
I knew this too! And have even used it for that same purpose when I was into designing custom rubiks twisty puzzles a few years ago