- A60°
- B50°
- C70°
- D110°
Step-by-Step Solution
The three angles 60°, ? and 50° lie side by side along one straight line, so they add to 180°: ? = 180° − 60° − 50° = 70°.
Answer: C) 70°
Three straight lines pass through point O, forming six angles. Two are marked 60° and 50°. Find the angle marked ?.
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