Let-ABC-be-a-triangle-and-B-be-the-reflection-of-B-in-the-line-CA-and-C-be-reflection-of-C-in-the-line-AB-Prove-that-ABC-ACB-ABC-

Question Number 23871 by Tinkutara last updated on 08/Nov/17

Let A B C be a triangle and B^{'} be the

reflection of B in the line C A and C^{'} be

reflection of C in the line A B . Prove

that Δ {A B C}^{'} ≅ Δ {A C B}^{'} ≅ Δ A B C .