Question

In a AABC, AB = AC. If ZA = 80°, then the measure of B is​

Answer 1

Answer:

angle A =80°

given,AB=AC

angle B=angle c(by properties of isosceles triangle)

Now,let base angle of triangle be X

A/q

X+X+80°=180°

2X+80°=180°

2X=180°-80°

2X=100°

X=100°/2

X= 50°

Hence, angle B and angle C =50°each