Given a11 congruenta3, which lines, if any, must be parallel based on the given information? justify your conclusion.

a || b, converse of the alternate exterior angles theorem

c || d, converse of the same-side interior angles theorem

a || b, converse of the corresponding angles theorem

not enough information to make a conclusion

The correct answer to this question is "Not enough information to make a conclusion." Parallel lines do not meet or lines that do not intersect at any point. Given the information above, it is not enough to make a conclusion. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.