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triangle construction given centroid, incenter, touchpoint of incircle with side

Source: 2016 XIX All-Ukrainian Tournament of Young Mathematicians named after M. Y. Yadrenko, Qualifying p14

May 6, 2021
geometryincenterconstructionCentroidUkrainian TYM

Problem Statement

Using only a compass and a ruler, reconstruct triangle ABCABC given the following three points: point MM the intersection of its medians, point II is the center of its inscribed circle and the point QaQ_a is touch point of the inscribed circle to side BCBC.