Answer:
a) vertical angles
b) same side interior angles
c)alternate interior angles
Explanation:
vertical angles are angles that are across from each other and they are congruent
interior angles are angles that are in between the parallel lines and when they are on the same side it means that they are on the same side of the transversal
interior angles are angles that are in between the parallel lines and when they are on different sides it means that they are on opposite sides of a transversal, this is called alternate interior angles