Question

In a triangle ABC, the internal angle bisectors of angle B and angle C meet at O. Prove OA is the bisector of angle A

Answer 1

let ABC is a isocseles traingle

so B=C

SO B/2 =C/2

in AOB AND AOC

A¹/2+B/2 = A²/2 +C/2

SO A¹/2= A²/2

Answer 2

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