I got 6 problems that I needed to proove using the pigeon hole principle and I was able to solve 5 of them but this last one is giving me some problems.(adsbygoogle = window.adsbygoogle || []).push({});

In each convex polygon with 2*n vertices there is at least one diagonal that isn't parallel with either one of the sides of the polygon.

I would appreciate some help to point me in the right direction or maybe an example of a similar proof that uses the pigeon hole principle, thx in advance

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# Homework Help: Need some help with a proof (using the pigeon hole principle)

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