Angle Relationships

Vertical angles ->opposite each other at the intersection and are equal
Adjacent angles -> next to each other at the intersection
- 1 and 2
- 2 and 3
- 3 and 4
- 4 and 1
Complimentary angles -> 2 angles that sum to 90 
Supplementary angles -> 2 angles that sum to 180 

Corresponding angles -> when the transversal cuts other lines
-
- Angels at the same location at each intersection are equal
- 1 and 5
- 2 and 6
- 4 and 8
- 3 and 7

- 72
and 2 are vertical angles (equal)
- 72
and 1 are supplementary
- 180
–
= angle 1
- 1 and 3 are vertical angles (equal)
- Use corresponding angles to find 4,5,6,7