Tuesday

September 16, 2014

September 16, 2014

Posted by **John** on Tuesday, March 12, 2013 at 10:05pm.

The figure in blue is an example of a 20-gon that doesn't satisfy the conditions of the challenge. The dotted lines indicate why there is no line which contains exactly 1 edge of the 20-gon This shows that N\neq 20. It does not imply that N > 20 or N < 20 .

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