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A transversal cuts two parallel lines. The ratio of a pair of co-interior angles is 4 : 5.
Find the measure of the larger of these two co-interior angles.

Class 7Transversal and Parallel LinesLines and Angles
  • A100
  • B200
  • C90
  • D110

Step-by-Step Solution

Co-interior angles sum to 180. Parts: 4k + 5k = 180, 9k = 180, k = 20. Larger = 5k = 100°.
Answer: A) 100

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