Respuesta :
If the transversal intersects 2 lines and the interior angles on the same-side of the transversal are supplementary. Then the angles will be parallel to one another.
It is important because in the same-side interior angles postulate. If the transversal intersects 2 lines and the interior angles on the same-side of the transversal are supplementary. Then the angles will be parallel to one another.
