Question

prove that the bisector of the Vertical angle of an isosceles triangle bisect the base at right angle​

Answer 1

Answer:

Since we want to prove that the bisector of the vertical angles of an isosceles triangle bisects the base at right angle, we need to consider the triangle congruence. There is a theorem which says that if two angles, a and b, are equal, then they have two opposite sides, r and t, respectively, which are also equal.