Question

give it answer fastly​

Answer 1

Answer:

angle A = 80°

as angle B = angle C (angles opposite to eaqual sides are equal)

so

angle A =180 - 2(angle B)

180 -100 = 80°

Answer 2

see broo in this question it is given that AB=AC therefore

angle B =C angle (opp. equal sides )

therefore in a triangle sum of angles is equal to 180°

A+B+C=180°

50+50+A=180°

180-100 =A

A = 80°