// angle bisectors wanted, isosceles (2011 From Tasks to Tasks, p8 Ukr)
Source:
May 2, 2021
geometryangle bisectorparallelisosceles
Problem Statement
On the median of the isosceles triangle , point is marked. Point is the projection of point on the line , point lies on the segment , points and are projections of point on the lines and , respectively. Prove that the bisectors of the angles and are parallel.