Answer:
angle B = 46 degree
Step-by-step explanation:
since AB and BC are equal in length it means that the given triangle is an isosceles triangle as it's two sides are equal.
since base angle of an isosceles triangle are equal angle A = angle C
angle ACB + 113 = 180 degree
angle ACB = 180 - 113
angle ACB = 67 degree
since angle C is 67 degree angle A is also 67 degree
angle B + angle A = 113 degree (sum of two interior opposite angle is equal to the exterior angle formed)
angle B + 67 = 113
angle B = 113 - 67
angle B = 46 degree
