1. 3.1 Parallel Lines and Transversals
What you’ll learn:
To identify the relationships between 2 lines or 2 planes.
To name angles formed by a pair of lines and a transversal

2. Parallel Lines
Parallel Lines – lines in the same plane that do not intersect. Symbol  written in statements or matching arrows written on a figure. AB  XY Skew lines – lines in different planes that do not intersect.

3. Transversal and the angles they create
A transversal is any line that intersects two more lines in a plane at different points. Interior angles – angles 3, 4, 5, 6 Exterior angles – angles 1, 2, 3, 4 Corresponding angles – 1&5, 2&6, 3&7, 4&8 Alternate interior – angles 3&6, 4&5 Alternate exterior – angles 1&8, 2&7 Consecutive interior – angles 3&5, 4&6 1 2 3 4 5 6 7 8

4. Use the figure to answer the following questions.B C D E F G H
Name all segments parallel to AD
Name all segments skew to HG.
Name all planes intersecting plane AEH.

5. Use the figure to answer the following questions
Identify the pairs of lines to which each given line is a transversal. Line

6. Identify each pair of angles
1 and 18 3 and 6 2 and 17 12 and 14 4 and 16 20 and 17 3 and 4

7. Homework p even, even