Question

In ∆ abc ab = bc and angle b = 45° then angle a is​

Answer 1

Answer:

According to ,Angle Sum Property of Triangle

Angle A + Angle B + Angle C = 180°

Angle B = Angle C = 45° [ Isosceles Property]

Angle A + 45° + 45° = 180°

Angle A = 90°

Answer 2

Answer:

45 degree

Step-by-step explanation:

abc is a isosceles triangle because ab =ac so by properties answer is 45°