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vineri, 4 martie 2022

problem, aops, mmaths mathathon, https://artofproblemsolving.com/community/c4t48f4h2789002_2019_mmaths_mathathon_rounds_57_math_majors_of_america_tournament_for_hs

 Problem 13


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Nice problem, lost source, again

 Today I saw an old problem on fb geometry sites, with a very nice solution bearing the inconfoundable signature of Master Hasan Ata; attach...