Answer:
∠x and ∠y are a pair CORRESPONDING ANGLES.
Step-by-step explanation:
Corresponding Angles: The angles formed on a same side of traversal when it passes through two parallel lines is called corresponding angles.
Corresponding angles are non- adjacent in nature
Also they are congruent to each other as they lie between the same parallel lines.
Here, ∠x and ∠y are a pair of CORRESPONDING ANGLES.
