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Kabir claims: 'If a transversal cuts two lines and a pair of co-interior angles add up to 180°, the two lines must be parallel.'
Is Kabir's claim correct?

Class 7Transversal and Parallel LinesLines and Angles
  • AYes, the lines are parallel
  • BNo, they are perpendicular
  • CNo, more information is needed
  • DOnly if the angles are 90° each

Step-by-Step Solution

If co-interior angles are supplementary, by the converse the lines are parallel. Kabir is correct.
Answer: A) Yes, the lines are parallel

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