Question

Complete the two-column proof.

Answer 1

1. <2 and <5 are supplementary 1. Given
2. <3 is congruent to <2 2. vertical angles are congruent
3. <3 and <5 are supplementary 3. substitution
4. l is parallel to m 4. if a transversal cuts two lines forming a pair of co-int. <'s then the two lines are parallel.

Answer 2

1) <2 and <5 = Given
2) <3 is congruent to <2 = Vertical angles
3) <3 and <5 are supplementary = same side interior angles
4) L is parallel to M = if two lines are cut by a transversal so that a pair of consecutive interior angles is supplementary, then the two lines are parallel
:D

Answer 3

You sure for step 3?

Answer 4

Yupp!