1.

Prove that If a transversal cuts two lines such that sum ofalternate interior angles is supplementary,then the two lines are parallel.​

Answer»

1.If the transversal CUTS two LINES such that a pair of alternate interior angles is EQUAL, then the two lines are parallel

2.if a transversal INTERSECTS two parallel lines then each pair of interior angles on the same side of the transversal is SUPPLEMENTARY



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