John Carlos Baez on Nostr: npub1u7eu2…c74ep - It's indeed trick to visualize this stuff. I believe first you ...

npub1u7eu2j3ytu686e0dp984rqn2kedylkz2k7qlvxvshdg67h77f3aqec74ep (npub1u7e…74ep) - It's indeed trick to visualize this stuff. I believe first you can fold to make vertices 2 and 3 meet, and then fold some more to make vertices 1 and 2 meet.

npub18ytv7sacr8rfz68ek35vdg38a2dp0mfgulq2a6rkr9gcsfetx9js0pf75r (npub18yt…f75r) actually folded up this shape, so it can be done: