- A90°
- B60°
- C120°
- D150°
Step-by-Step Solution
Each of the other three angles is vertically opposite one of these, so the three consecutive angles fill a straight angle: . The largest is .
Answer: A) 90°
Three straight lines pass through a point O. Going round O, three consecutive angles are °, ° and °. What is the largest of the six angles at O?
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