Question

In an isosceles triangle ABC, AB = AC angle B = 50° then angle A is

a. 50°
b. 80°
c. 70°
d. 60°​

Answer 1

Answer:

Given that AB=AC

and <B=50

If adjacent sides are equal, then the angles opposite to equal sides are also equal.

by this <C=50°

Angle sum property <A+<B+<C =180°

by calculation

50+50+x=180. let angle A is x

x=80°

Therefore <A=80°

Answer 2

Answer:

80 degree..is the right answer