Difference between revisions of "2004 IMO Shortlist Problems/G8"
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Revision as of 21:59, 5 July 2021
A cyclic quadrilateral is given. The lines and intersect at , with between and ; the diagonals and intersect at . Let be the midpoint of the side , and let be a point on the circumcircle of such that . Prove that are collinear.