- A60
- B66
- C54
- D120
Step-by-Step Solution
The angles on a straight line sum to 180°. . angle deg.
Answer: A) 60
Three rays OA, OB and OC are drawn from point O on one side of a straight line, dividing a straight angle so that angle 1 : angle 2 : angle 3 = 2 : 3 : 4. Find the measure of the middle angle, angle 2 (in degrees).
Class 9Pairs of AnglesGeometry — Lines and Angles
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