Revision history of "1989 IMO Problems/Problem 4"

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  • (cur | prev) 14:28, 30 August 2008Cosinator (talk | contribs). . (4,085 bytes) (+4,085). . (New page: Let <math>ABCD</math> be a convex quadrilateral such that the sides <math>AB,AD,BC</math> satisfy <math>AB=AD+BC</math>. There exists a point <math>P</math> inside the quadrilateral at a d...)
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