Answer:

Explanation:
- As, Quadrilateral PQRS is a parallelogram and PQ ║ SR and PS ║ QR where QS is the transversal
And, it is given that the measure of ∠PQS is 58°.
So,

![\bf \qquad \implies∠QSR = 58° \: \: [Alternate \: interior \: angles] \\ \\](https://img.qammunity.org/2023/formulas/mathematics/high-school/ci8paskay99xz8cb8135elhc7kjw26wmw9.png)
Let's know something about Alternate interior angles :
- If a transversal intersects two parallel lines, then each pair of alternate interior angle is equal