Which is enough information to prove that u parallel to v? Lines u and v are cut by transversal t. Clockwise from top left, the angles formed by t and u are 1, 2, 3, 4; formed by v and t are 5, 6, 7, 8.
1)Angle 2 is congruent to angle 4
2)Angle 4 is congruent to angle 8
3)Angle 6 + angle 7 = 180 degrees
4)Angle 3 + angle 4 = 180 degrees