Difference between revisions of "2009 IMO Problems/Problem 4"
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Revision as of 06:27, 23 July 2009
Problem
Let be a triangle with . The angle bisectors of and meet the sides and at and , respectively. Let be the incentre of triangle . Suppose that . Find all possible values of .
Authors: Jan Vonk and Peter Vandendriessche, Belgium, and Hojoo Lee, South Korea
--Bugi 10:27, 23 July 2009 (UTC)Bugi