Trefoil Knot in Paper forms Pentagon/Mistake
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Source Work
1992: David Wells: Curious and Interesting Puzzles:
- The Puzzles:
- Henry van Etten
- $126$
- Henry van Etten
Mistake
- The next problem occurs first in Urbino d'Aviso's treatise on the sphere (1682):
Correction
The mathematician in question is Urbano d'Aviso.
Sources
- 1992: David Wells: Curious and Interesting Puzzles ... (previous) ... (next): Henry van Etten: $126$