MathDB
hexagon area wanted, angle bisectors, circumcircle related

Source: Moldova JBMO TST 2004 2.3

July 10, 2020
circumcirclegeometryangle bisector

Problem Statement

Let the triangle ABCABC have area 11. The interior bisectors of the angles BAC,ABC,BCA\angle BAC,\angle ABC, \angle BCA intersect the sides (BC),(AC),(AB)(BC), (AC), (AB) and the circumscribed circle of the respective triangle ABCABC at the points LL and G,NG, N and F,QF, Q and EE. The lines EF,FG,GEEF, FG,GE intersect the bisectors (AL),(CQ),(BN)(AL), (CQ) ,(BN) respectively at points P,M,RP, M, R. Determine the area of the hexagon LMNPRLMNPR.