MathDB
Question 3

Source: Iran TST 2006

April 17, 2006
geometrygeometry proposed

Problem Statement

Suppose ABCABC is a triangle with MM the midpoint of BCBC. Suppose that AMAM intersects the incircle at K,LK,L. We draw parallel line from KK and LL to BCBC and name their second intersection point with incircle XX and YY. Suppose that AXAX and AYAY intersect BCBC at PP and QQ. Prove that BP=CQBP=CQ.