NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Problems and Solutions

Question 78

Question. 78

78. In Fig. 5.38, l ∥ m ∥ n. ∠QPS = 35° and ∠QRT = 55°. Find ∠PQR.

Answer:

90°

Detailed Answer with Explanation:

Since l ∥ m ∥ n, ∠PQR = ∠QPS + ∠QRT = 35° + 55° = 90°.