Medium Math Class 9 Level 3

An exterior angle of a triangle is 118° and one interior opposite angle is 47°. What is the other interior opposite angle?

त्रिभुज का बाह्य कोण 118° है और एक अंतः विपरीत कोण 47° है तो दूसरा अंतः विपरीत कोण कितना होगा?

A 61° / 61° B 67° / 67° C 71° / 71° D 81° / 81°
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Correct Answer

C. 71° / 71°

Explanation

An exterior angle equals the sum of two interior opposite angles so the other is 118° - 47° = 71°.

बाह्य कोण दो अंतः विपरीत कोणों के योग के बराबर है इसलिए दूसरा 118° - 47° = 71° है।

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