Answer:
∠ PRS = 100°
Step-by-step explanation:
The sum of the 3 angles in Δ PQR is 180° , that is
∠ QPR + 48° + 80° = 180°
∠ QPR + 128° = 180° ( subtract 128° from both sides )
∠ QPR = 52°
∠ PRS and ∠ PRQ are a linear pair and sum to 180° , that is
∠ PRS + 80° = 180° ( subtract 80° from both sides )
∠ PRS = 100°
