- A130°
- B50°
- C140°
- D120°
Step-by-Step Solution
OA is on the left, where the INNER scale starts at 0. Reading the inner scale at OB gives 130°. The angle is clearly obtuse, which confirms it.
Answer: A) 130°
Arm OA lies on the LEFT side along the base line. What is ∠AOB?
Class 6Measuring AnglesGeometry
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