Part 1
complementary-----> sum is equal to 90 degrees
N2
supplementary-----> sum is equal to 180 degrees
N3
alternate exterior angles
N4
alternate interior angles
N5
corresponding angles
N6
vertical angles
N7
same side interior angles
N 1 2, 3 ------> first row
3,5 -----> second row
6,7 ----> third row
