Question

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

Answer 1

Step-by-step explanation:

Let ΔABC be the isoceleus triangle with AB=AC and AD as vertical angle bisector

AB=AC

∠B=∠C

∠BAD=∠CAD

So by ASA criteria the triangles are congruent.

⟹BD=DC

So the bisector of vertical angel bisects the base