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Polygon mesh with a point (Posted on 2021-01-31) Difficulty: 3 of 5
On the plane are given a convex n-gon P1P2....Pn and a point Q inside it, not lying on any of its diagonals. Prove that if n is even, then the number of triangles PiPjPk containing the point Q is even.

No Solution Yet Submitted by Danish Ahmed Khan    
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