# Intersecting Polygon

A polygon with $$n \ge 3$$ vertices has the following edges: $$P_1P_2, P_2P_3 , \dots , P_n P_1$$

Let $$A_n$$ denote the maximal amount of intersections of those edges, if no two of them lie on the same line.

Compute $$A_{2015}+ A_{2016}$$.

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