Answer:
First pair : ∠PQT and ∠SQR
Second pair : ∠PQR and ∠SQT
Explanation:
» the lines PS and RT intersect each other at Q
also, ∠PQT and ∠SQR are opposite angles
Then
the angles ∠PQT and ∠SQR are vertical angles.
………………………………………………………………………
» the lines PS and RT intersect each other at Q
also, ∠PQR and ∠SQT are opposite angles
Then
the angles ∠PQR and ∠SQT are vertical angles.