EXPLANATION
The alternate interior angles pairs are:
 3-10 4-9 13-8 7-14
 2-13 5-10 4-15 7-12
The alternate exterior angles pairs are:
 1-14 6-9 3-16 11-8
 2-11 1-12 16-5 15-6
The consecutive interior angles are:
 2-10 5-13 2-5 10-13
 4-12 7-15 4-7 12-15
The consecutive exterior angles are:
 1-9 6-14 8-16 3-11 
 1-6 9-14 3-8 11-16