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4 points, 2 lengths
Posted 08 March 2013 - 05:07 AM
Posted 08 March 2013 - 05:42 AM
Ah, I see... a pentagon minus one point. Which I guess would be the only answer if there were five points instead of four.
Yes, I think it's the only five-point case.
When a friend asked me this question a few years ago, I was certain, after finding the first five, that I had them all.
Then he said, what if there were five points?
I believe he said the problem came from a Jr. High. math competition that he had organized.
We ate the rest of our lunch in silence.
- Bertrand Russell
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