In a triangle, if ∠A + ∠B = 110° and ∠B + ∠C = 130°, find ∠B.

Type: MCQ • Marks: 1

A. 40°

B. 60°

C. 70°

D. 50°

Explanation

(∠A + ∠B + ∠C) + ∠B = 180° + ∠B = 110° + 130° = 240° => ∠B = 240° - 180° = 60°.

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Class 7th Ganita Prakash 1

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