NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice QuestionsQuestion 40
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice Questions
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°.