Revision history of "2010 OIM Problems/Problem 5"

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  • (cur | prev) 15:13, 14 December 2023Tomasdiaz (talk | contribs). . (697 bytes) (+697). . (Created page with "== Problem == Let <math>ABCD</math> be a cyclic quadrilateral whose diagonals <math>AC</math> and <math>BD</math> are perpendicular. Let <math>O</math> be the circumcenter of...")