Theorem help! please! worth 10 points!!?

Question

can someone help me with these problems? please. i only need help on 9, 10 and 16. thanks in advance.

http://i127.photobucket.com/albums/p153/nanipics1/emamgeo005.jpg

Answer 1

9. Corresponding Angles are congruent.

10.Interiors on Same Side: If two parallel lines are cut by a transversal, the interior angles on the same side of the transversal are supplementary.

16.Corresponding Angles Converse: If two lines are cut by a transversal and the corresponding angles are congruent, the lines are  parallel.