Question

In triangle ABC, AB = AC and ∠B = 50° then; ∠A is: a) 50 b) 80 c) 100

Answer 1

Step-by-step explanation:

in ∆abc

if ab=ac (opposite side of triangle if equal than => opposite angle also equal )

means ABC. is isosceles triangle

so, angleB =angleC

/_B=/_C

= 50°

I hope it's help you

Answer 2

Step-by-step explanation:

It is an isosceles traingle

so, <B= < C

sum of the angles of triangle = 50+50+<A=180°

<A = 80°