- A110°
- B70°
- C50°
- D130°
Step-by-Step Solution
Each turn is an exterior angle, and the three exterior angles add to 360°: 360° − 120° − 130° = 110°. (70° is the interior angle of the park at that corner.)
Answer: A) 110°
Ramesh walks around a triangular park. At the first two corners he turns through 120° and 130°. Through what angle does he turn at the third corner to face his starting direction?
Class 9Exterior Angle of a TriangleGeometry — Lines and Angles
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