Explanation
when a line intersects a pair of parallel lines, diverse angles are created
a)he angles which occupy the same relative position are called corresponding angles (red)
b)vertical angles are the angles opposite each other when two lines cross(green angles)
c)When two lines are crossed by another line (called the Transversal): Alternate Exterior Angles are a pair of angles on the outer side of each of those two lines but on opposite sides of the transversal.(blue)
d)Alternate interior angles are the angles formed when a transversal intersects two coplanar lines(purple)
e)Two angles are called supplementary when their measures add up to 180 degrees.(yellow)
f)Two angles are called complementary if their measures add to 90 degrees, a and b in the rigth angle
so
Step 1
name each angle:
1)alternate interior
2)corresponding
3)
so,
supplementary angles
4)alternate exterior angles
5)vertical angles
6)as the angles 1 and 2 , the angles are complementary angles
I hope this helps you