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When a transversal cuts two parallel lines, a corresponding angle and a co-interior angle adjacent to it are supplementary. True or False?

Class 9Parallel Lines and a TransversalGeometry — Lines and Angles
  • ATrue
  • BFalse
  • COnly if both are acute
  • DOnly if the transversal is perpendicular

Step-by-Step Solution

A corresponding angle equals the interior angle at the far line; that interior angle and the co-interior angle form a linear pair summing to 180°, so they are supplementary.
Answer: A) True

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