Medium Math Class 9 Level 8

In an isosceles triangle each base angle is 43°. What is the vertex angle?

समद्विबाहु त्रिभुज में प्रत्येक आधार कोण 43° है तो शीर्ष कोण कितना होगा?

A 84° / 84° B 94° / 94° C 104° / 104° D 114° / 114°
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Correct Answer

B. 94° / 94°

Explanation

The angle sum is 180° so the vertex angle is 180° - 86° = 94°.

त्रिभुज का योग 180° है इसलिए शीर्ष कोण 180° - 86° = 94°।

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