Revision history of "1977 IMO Problems/Problem 1"

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  • (cur | prev) 15:40, 29 January 2021Hamstpan38825 (talk | contribs). . (1,172 bytes) (+1,172). . (Created page with "==Problem== In the interior of a square <math>ABCD</math> we construct the equilateral triangles <math>ABK, BCL, CDM, DAN.</math> Prove that the midpoints of the four segments...")