Question

If ab = bc in triangle ABC, then which of the following must be true?

angle a is less than angle c
a is equal to c
a is greater than c
a is greater than b

Answer 1

Angle A is equal to angle C

Explanation:

If ab = bc in triangle ABC, then triangle ABC is an isosceles triangle because two sides are equal. In an isosceles triangle, the base angles are equal. Therefore,

Angle A is equal to angle C

The diagram of the triangle ABC is shown in the attached photo. If