- A70°
- B30°
- C100°
- D130°
Step-by-Step Solution
On the outer scale, OA is at 30 and OB is at 100. The angle between them is 100 − 30 = 70°. (100° is just OB's reading.)
Answer: A) 70°
Arms OA and OB cross the protractor scale as shown, and neither is on 0. What is ∠AOB?
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