Question

In a A ABC, AB = AC and angleA = 70°, then find the value of angleC.
a) 45°
b) 70°
c) 550
d) 110​

Answer 1

Answer:

Angle C = 55°

Step-by-step explanation:

Because it's isosceles triangle

Answer 2

Answer:

55°

Step-by-step explanation:

So two sides are equal making this triangle an isosceles triangle, where the other two angles are equal. Since we know one angle is 70°, this angle plus the other two angles should add up to 180°. Taking each of the other angles as x :

70° + x + x = 180°

70° + 2x = 180°

2x = 110°

x = 55°

Therefore, angle C is 55°