After “just” 3 years (shut up, I got distracted), I finally completed the figures for the “A4 paper puzzle” presented by @standupmaths some 8 years ago (yes, I only saw the video when it was 5 years old). Here's my write-up on it, including some random thoughts on possible generalizations:

https://wok.oblomov.eu/mathesis/a4-paper-puzzle/

#math #geometry #paper #paperFolding #a4paper #A4PaperPuzzle