Question

Two angles are said to be , if they have equal measures.

Answer 1

Define congruent angles:

Two or more angles are known as congruent to each other if the measures of the angles are equal to each other.

In the given figure, $\angle ABC$ and $\angle PQR$ both equal to $45°$, thus they are congruent angles.

Hence, two angles are said to be congruent if they have equal measures.