Two angles can be referred to as "angle pairs." Depending on their relationship, they may be specifically called complementary angles (if their measures add up to 90 degrees), supplementary angles (if they add up to 180 degrees), or vertical angles (if they are opposite each other when two lines intersect). The terminology used often depends on the context of their arrangement and measurement.
Just call them "congruent angles".
They are co-terminal angles.
It is not an axiom, but a theorem.
In the context of two parallel lines and an intercept, they are called interior angles.
It is called an isosceles triangle.
Just call them "congruent angles".
They are supplementary angles.
Right angles.
a line or supplementary angles.
A bisected angle.
Every triangle has at least three angles.
They are co-terminal angles.
a complementary angle
It is not an axiom, but a theorem.
They are complementary
In the context of two parallel lines and an intercept, they are called interior angles.
It is called an isosceles triangle.