An isosceles triangle has base angles of 71° each. Find the vertex angle.

Type: MCQ • Marks: 1

A. 38°

B. 109°

C. 71°

D. 48°

Explanation

Base angles are equal. Vertex angle = 180° − 71° − 71° = 38°.

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Class 7th Ganita Prakash 2

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