Easy Math Class 9 Level 4

If the vertex angle of an isosceles triangle is 40° then what is each base angle?

यदि समद्विबाहु त्रिभुज में शीर्ष कोण 40° है तो प्रत्येक आधार कोण कितना होगा?

A. 60° / 60° B. 70° / 70° C. 80° / 80° D. 90° / 90°
Show answer and explanation
Correct Answer

B. 70° / 70°

Explanation

The remaining angle sum is 140° and both base angles are equal so each is 70°.

शेष कोणों का योग 140° है और दोनों आधार कोण बराबर हैं इसलिए प्रत्येक 70° होगा।

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
Answer and explanation locked 🔒

Tap once to confirm. On the next tap, login will open for the answer.

Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class.