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Qua-2016-511, concyclic

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작성자: komath

라벨: cyclic, general, problem, quadrilaterals

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<Tri-2024-2109>, hint Let M be the midpoint of arc BC, then A,I,M,E are collinear and M is the center of circle BIC <BIM=<IBM. ...

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Qua-2016-511, concyclic

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