NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Multiple Choice Questions

Question 19

Question.  19

In Fig. 5.17, PQ ∥ SR and SP ∥ RQ. Then, angles a and b are respectively

(a)

(a) 20°, 50°

(b)

(b) 50°, 20°

(c)

(c) 30°, 50°

(d)

(d) 45°, 35°

Detailed Answer with Explanation:

By alternate interior angles, a=20°, b=50°.