- A50°
- B40°
- C310°
- D130°
Step-by-Step Solution
Angles on a straight line add up to 180°. So ? = 180° − 50° = 130°. (40° would be the complement, which needs 90°.)
Answer: D) 130°
A ray stands on a straight line, making the 50° angle shown. Find the angle marked ?.
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