- A90°
- B10°
- C45°
- D135°
Step-by-Step Solution
The arm OB is about halfway between the flat arm OA and a vertical (90°) line, so the angle is about half a right angle: 45°.
Answer: C) 45°
Look at ∠AOB. Which is the best estimate of its measure?
Class 6Measuring AnglesGeometry
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