Answer:

supplementary angles

as sum of them will 180 degree

The pairs of interior angles formed by two parallel lines and its transversal are Supplementary.

Hint

If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles formed are supplementary . When two lines are cut by a transversal, the pairs of angles on either side of the transversal and inside the two lines are called the alternate interior angles .

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