Question

if a transversal intersect two parallel lines then each part of cointerior angles are sublimentary​

Answer 1

Answer:

first of all we know that If a transversal line intersects two parallel lines, then each pair of co- interior angles also known as interior angles on the same side of the transversal will be supplementary. ... angle 8+ angle 1=180 degree.

Answer 2

Conversely, if a transversal intersects two lines such that a pair of co-interior angles are supplementary, then the two lines are parallel.