NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 5: Lines And Angles - Multiple Choice Questions
Question 15

Question.  15

The measure of an angle which is four times its supplement is

(a)

(a) 36°

(b)

(b) 144°

(c)

(c) 16°

(d)

(d) 64°

Detailed Answer with Explanation:

Let angle = x, supplement = 180 − x.

Given: x = 4(180 − x).

So, 5x = 720 ⇒ x = 144°.

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NCERT Exemplar Solutions Class 7 – Mathematics – Unit 5: Lines And Angles – Multiple Choice Questions | Detailed Answers