angle chasing inside an isosceles triangle, equal segments and right angle
Source: 2011 Oral Moscow Geometry Olympiad grades 8-9 p2
April 17, 2020
anglesgeometryisoscelesequal segmentsright angle
Problem Statement
In an isosceles triangle () on the side , point is marked so that the segment is equal to the altitude of the triangle drawn on this side, and on the side , point is marked so that the angle is right. Find the angle .