Lines and Angles · Class 9 · CBSE Mathematics
In a triangle, the measure of one exterior angle is 110° and one of its interior opposite angles is 40°. What is the measure of the other interior op…
Practice question from Lines and Angles (Class 9 · CBSE Mathematics), with the correct answer and a step-by-step solution.
medium · MCQ · Q-7EAF4B
In a triangle, the measure of one exterior angle is 110° and one of its interior opposite angles is 40°. What is the measure of the other interior opposite angle?
- A.40°
- B.70°Correct answer
- C.110°
- D.150°
Solution
By the exterior angle property of a triangle, the measure of an exterior angle is equal to the sum of the measures of its two interior opposite angles. Therefore, . This gives the other interior opposite angle as .
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