Question

mc014-1.jpg
Which lines can you conclude are parallel given that mc014-2.jpg? Justify your conclusion with a theorem.

Line c is parallel to line d by the Converse of the Same-Side Exterior Angles Theorem.
Line c is parallel to line d by the Converse of the Corresponding Angles Theorem.
Line a is parallel to line b by the Converse of the Same-Side Exterior Angles Theorem.
Line a is parallel to line b by the Converse of the Corresponding Angles Theorem.