MathDB
2008 JBMO Shortlist G4

Source: 2008 JBMO Shortlist G4

October 10, 2017
JBMOgeometry

Problem Statement

Let ABCABC be a triangle, (BC<ABBC < AB). The line ll passing trough the vertices CC and orthogonal to the angle bisector BEBE of B\angle B, meets BEBE and the median BDBD of the side ACAC at points FF and GG, respectively. Prove that segment DFDF bisects the segment EGEG.