A staircase handrail is made from congruent parallelograms. In PQRS, PQ = 17.5, ST = 18, andmZQRS = 115º. Find PQR

Given QRS = 115°
Since, PQR + QRS = 180°
Angles on the same side of the transversal are supplementary.
Now,
PQR + 115° = 180°
PQR = 180° - 115°
PQR = 65°
Hence, the measure of PQR = 65°