- A65
- B72
- C79
- D144
Step-by-Step Solution
Corresponding angles at the two crossings of a transversal with parallel roads are equal, so the angle is 72°.
Answer: B) 72
In village survey work, two straight roads run parallel and a canal cuts across both like a transversal. At the first crossing the canal makes an angle of 72° with the road (measured on the upper-left).
Find the angle the canal makes on the upper-left at the second crossing (its corresponding angle).
Class 9Parallel Lines and a TransversalGeometry — Lines and Angles
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