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A regular n-sided polygone, A 1 A 2 An, can be drawn. Now a regular m-sided polygon A 2 A 3 B 1 B 2

A regular n-sided polygone, A1A2…An, can be drawn.

Now a regular m-sided polygon A2A3B1B2 · · · Bm−2 that has with m < n is drawn inwardly on side A2A3 and a regular p-sided polygon A5A4C1C2 · · · Cp−2 is drawn inwardly on side A5A4.

Given that ∠A3A4B1 = ∠A3A4C1, show 2/p + 1/m = 1/2 + 3/n .

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