1. Parallel and Perpendicular Lines
Chapter 3
Parallel and Perpendicular Lines

2. 3-1 Parallel Lines and Transversals
In this section we will identify the relationships between two lines or two planes.
We will name angles that are formed by a pair of lines and a transversal.

3. Vocabulary Parallel Lines Parallel Planes:
Coplanar lines that do not intersect.
Parallel Planes:
Two planes that do not intersect.

4. Vocabulary Skew Lines Are not parallel Do not intersect
Do not line in the same plane.

5. Vocabulary Transversal
A line that intersects two or more lines in a plane at different points.
Transversal

6. Identifying Angles! 1 2 3 4 5 6 7 8

7. Exterior Angles 1 2 3 4 5 6 7 8

8. Interior Angles 1 2 3 4 5 6 7 8

9. Consecutive Interior Angles1 2 3 4 5 6 7 8

10. Alternate Exterior Angles1 2 3 4 5 6 7 8

11. Alternate Interior Angles1 2 3 4 5 6 7 8

12. Corresponding Angles 1 2 3 4 5 6 7 8