1. 11.1 Parallel Lines Cut by a Transversal
What can you conclude about the angles formed by parallel lines that are cut by a transversal?

2. Transversal Vocabulary
Parallel Lines – Two lines running in the same direction, that never touch.
Transversal – a line that intersects two lines in the same plane at two different points.
Vertical Angles – Angles that are opposite from each other, and are always congruent
Transversal

3. Look at the previous parallel lines to identify examples given below;

4. 180° - Supplementary Angles Two or more angles added together will give you 180°

5. 90° – Complimentary Angles Two or more angles that add up to 90°

6. Vertical Angles (Congruent)

7. Example 1
Identify Alternate Interior and Exterior Angles on Lines Using Your Colors;
Label m<5 on graph with 65°
Label rest of the angle measures
Answer question => __________
65°

8. Example 2;
Label all angle measures (even though it has a variable term)
Add two angles together to equal 180
7x + 11x = 180
Solve for x, using inverse operations
18x = 180; x = 10
Plug x into <ADE – 11(10) = 110°

9. Your Turn

10. Homework and Classwork
CW - Pg. 350 Your Turn 5-7; All of Guided Practice
HW – WS (Given in Class); pg. 351 # 7-19