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2013 USAMO Problems/Problem 1

Revision as of 17:48, 11 May 2013 by Yuler1818181818 (talk | contribs) (Created page with "In triangle , points lie on sides respectively. Let , , denote the circumcircles of triangles , , , respectively. Given the fact that segment intersects , , again at respectively...")
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In triangle , points lie on sides respectively. Let , , denote the circumcircles of triangles , , , respectively. Given the fact that segment intersects , , again at respectively, prove that .

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