- A180
- B90
- C99
- D81
Step-by-Step Solution
If one angle is 90°, its linear pair is 90°, and all corresponding/alternate angles are 90°, so the transversal is perpendicular.
Answer: B) 90
Two parallel lines are cut by a transversal. One angle measures 90°. Then ALL eight angles measure ______ deg.
Class 9Parallel Lines and a TransversalGeometry — Lines and Angles
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