1) corresponding, congruent
2) complementary
3) alternate exterior, supplementary
4) adjacent
5) corresponding, congruent
6) none
7) vertical, congruent
8) alternate interior, congruent
9) adjacent, supplementary, linear pair
10) vertical, congruent
11)
12) alternate interior, congruent
13) adjacent
14) supplementary
15)
16) alternate exterior
