- A80° and 60°
- B70° and 80°
- C90° and 60°
- D100° and 50°
Step-by-Step Solution
Interior opposite angles must add to 140°: 80 + 60 = 140. (70+80=150, 90+60=150, 100+50=150 are wrong.)
Answer: A) 80° and 60°
An exterior angle of a triangle is 140°. Which pair of interior opposite angles is possible?
Class 7Exterior Angle PropertyTriangles
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