Question

In the given figure, AB = AC and ∠B = 50° then; ∠A is: A) 50o B) 80o C) 100o D) 130​

Answer 1

Answer:

B) 80°

Step-by-step explanation:

Since AB = AC,

angle B = angle C (isosceles triangle property)

therefore, angle B = angle C = 50°

sum of angles in ∆ = 180°

A + B + C = 180°

A + 50 + 50 = 180°

A + 100 = 180°

A = 180 - 100

A = 80°

Answer 2

Answer:-B)80

explanation:-

because angle-b = angle-c

=50+50=100

so, 180-100=80