A Classically Hard Geometry Problem

This puzzle is world's toughest and easiest Congruent triangles Isosceles triangles Equilateral triangles Parallel lines Angle Bisector Construction of lines Langley's ... In the figure, what is the value of angle x? This Aldric from Aspiring Mathletes is going to explain a People around the world have asked me this and similar In today's video i would like to introduce you a very nice

Hi in today's video i would like to introduce a very nice