Medium Math Class 9 Level 3

If the angles of a linear pair are in the ratio 4:5 then what is the smaller angle?

यदि रैखिक युग्म के कोणों का अनुपात 4:5 है तो छोटा कोण कितना होगा?

A 70° / 70° B 75° / 75° C 80° / 80° D 90° / 90°
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Correct Answer

C. 80° / 80°

Explanation

The 9 parts equal 180° so one part is 20° and the smaller angle is 80°.

9 भाग 180° के बराबर हैं इसलिए एक भाग 20° और छोटा कोण 80° है।

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