NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice Questions
Question 40

Question.  40

In ΔABC, ∠A = 100°, AD bisects ∠A and AD ⟂ BC. Then, ∠B is equal to

(a)

(a) 80°

(b)

(b) 20°

(c)

(c) 40°

(d)

(d) 30°

Detailed Answer with Explanation:

AD bisects ∠A = 100°, so each part = 50°. AD ⟂ BC gives right triangle. Hence ∠B = 40°.

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NCERT Exemplar Solutions Class 7 – Mathematics – Unit 6: Triangles – Multiple Choice Questions | Detailed Answers