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ratio of areas, n-gon inscirbed in n-gon

Source: I All-Ukrainian Tournament of Young Mathematicians, Qualifying p7

May 12, 2021
ratiogeometrypolygoninscribedareasUkrainian TYM

Problem Statement

Given a natural number n>3n> 3. On the plane are considered convex nn - gons F1F_1 and F2F_2 such that on each side of F1F_1 lies one vertex of F2F_2 and no two vertices F1F_1 and F2F_2 coincide. For each nn, determine the limits of the ratio of the areas of the polygons F1F_1 and F2F_2. For each nn, determine the range of the areas of the polygons F1F_1 and F2F_2, if F1F_1 is a regular nn-gon. Determine the set of values of this value for other partial cases of the polygon F1F_1.