(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In a convex polygon of 6 sides, 2 diagonals are selected at random. The probability that they intersect in the interior of the polygon is

2. Relevant equations

3. The attempt at a solution

There are 9 diagonals in a polygon of 6 sides. Therefore the total cases are 9C2. But how would i go about finding the favourable cases? I don't have a clue on how to proceed further. I basically can't understand how can i show that the diagonals intersect in the interior of the polygon.

Any help is appreciated!

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# Homework Help: Probability, Diagonals of a convex polygon

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