Medium Math Class 9 Level 4

In an isosceles triangle each base angle is 64°. What is the vertex angle?

समद्विबाहु त्रिभुज में प्रत्येक आधार कोण 64° है तो शीर्ष कोण कितना होगा?

A) 42° / 42° B) 52° / 52° C) 64° / 64° D) 116° / 116°
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Correct Answer

B. 52° / 52°

Explanation

The angle sum is 180°, so the vertex angle is 180° - 128° = 52°.

त्रिभुज का योग 180° है इसलिए शीर्ष कोण 180° - 128° = 52°।

Related Questions

Easy Math Class 10 Level 1

What is the area of a circle with radius 7 cm when π = 22/7?

7 सेमी त्रिज्या वाले वृत्त का क्षेत्रफल कितना होगा जब π = 22/7 हो?

A. 44 सेमी² / 44 cm² B. 77 सेमी² / 77 cm² C. 154 सेमी² / 154 cm² D. 308 सेमी² / 308 cm²
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