A lot of perpendiculars
Source: Canada 2001
March 4, 2006
trigonometrygeometrycircumcircleperpendicular bisectorangle bisectorgeometry unsolved
Problem Statement
Let be a triangle with . Let be the intersection point of the perpendicular bisector of and the internal angle bisector of . Construct points on (extended) and on such that is perpendicular to and is perpendicular to . Let be the intersection point of and .
Determine the value of .