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For what value of x will the lines l and m be parallel to each other?

Option: 1

45^0


Option: 2

30^0


Option: 3

60^0


Option: 4

90^0


Answers (1)

best_answer

 

If a transversal intersects two parallel lines, then each pair of alternate interior angles is equal.

So

\\3x-40^0=2x+20^0\\x=60^0

Posted by

mansi

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