i've become obsessed with fold-and-cut theorem lately. then i got this idea to unify two pieces of beautiful geometry into one :)

for those who don't know:
cs.uwaterloo.ca/~csk/hat/
erikdemaine.org/foldcut/

if you spot any errors, or if you can come up with a simpler crease patterns, let me know! i tested these multiple times, they seem to be correct.