Post AxPIvEQ4eeeBubvUgK by robinhouston@mathstodon.xyz
 (DIR) More posts by robinhouston@mathstodon.xyz
 (DIR) Post #AxPISPVyKAYpvPwTHE by robinhouston@mathstodon.xyz
       2025-08-21T21:28:48Z
       
       0 likes, 1 repeats
       
       I have been given what must surely be the largest model yet made of my dodecahedron whose adjacent faces meet at right angles, except on one edge where they meet at 45°.(Yes, I do need to find a better name for it.)
       
 (DIR) Post #AxPIYSUWAdDStV96Zc by futurebird@sauropods.win
       2025-08-21T21:32:22Z
       
       0 likes, 0 repeats
       
       @robinhouston Concave polytopes aren't something I've thought about much... it always seemed so overwhelming. How did you find this one? Did you fold an existing hedron?
       
 (DIR) Post #AxPIvEQ4eeeBubvUgK by robinhouston@mathstodon.xyz
       2025-08-21T21:36:27Z
       
       0 likes, 1 repeats
       
       @futurebird That’s an excellent question. The answer is not terribly easy to convey in written form, but I made an attempt in https://s3.boskent.com/single-angle-polyhedra/g4g-paper.pdf
       
 (DIR) Post #AxPJGtFY2nDMcsKYEK by futurebird@sauropods.win
       2025-08-21T21:40:23Z
       
       0 likes, 0 repeats
       
       @robinhouston This is amazing! Thank you.
       
 (DIR) Post #AxRcA2OFws1IOPllg0 by robinhouston@mathstodon.xyz
       2025-08-22T12:25:07Z
       
       0 likes, 0 repeats
       
       I’ve been reminded of the little booklet about this shape that I wrote for the last G4G. I’ve read it through for the first time since then, and I’m still pretty happy with it. I’ve also corrected a mistake on the last page (which I had to correct by hand in 200 copies originally).https://s3.boskent.com/single-angle-polyhedra/g4g-paper.pdf
       
 (DIR) Post #AxRcA3Fmjqq14QoW6y by robinhouston@mathstodon.xyz
       2025-08-22T12:26:46Z
       
       2 likes, 0 repeats