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It's all in the stars (Posted on 2016-12-14) Difficulty: 2 of 5
It’s easy to show that the five acute angles in the vertices
of a regular 5-pointed star total 180°.

Please show that the sum of these angles in an irregular 5-pointed star is also 180°.

Source: A. Korshkov, the Russian science magazine Kvant.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Some ThoughtsA counterexample.broll2016-12-14 22:35:32
SolutionSolutionBractals2016-12-14 13:15:45
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