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

Question 17

Question.  17

In Fig. 5.16, PA ∥ BC ∥ DT and AB ∥ DC. Then, the values of a and b are respectively

(a)

(a) 60°, 120°

(b)

(b) 50°, 130°

(c)

(c) 70°, 110°

(d)

(d) 80°, 100°

Detailed Answer with Explanation:

Using parallel line alternate and corresponding angles, a=50°, b=130°.