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

Question 31

Question.  31

In Fig. 5.26, POQ is a line, then a is equal to

(a)

(a) 35°

(b)

(b) 100°

(c)

(c) 80°

(d)

(d) 135°

Detailed Answer with Explanation:

Angles on a line: 100 + a + 135 = 180.

So, a = 180 − (100 + 135) = 80°.