Download Geometry Lab 3-2

Name
LESSON
3-2
Date
Class
Geometry Lab
Investigating Angles Formed by Parallel Lines
Cut by a Transversal
Use with Lesson 3-2
Materials: protractor, paper and pencil
Activity
You and your partner are going to explore the relationship among the angles formed
by a pair of parallel lines cut by a transversal.
Step 1 Measure each of the eight angles with a protractor and record your results.
TRANSVERSAL
m!1
m!2
m!3
m!4
m!5
m!6
m!6
m!8
Step 2 List all the pairs of congruent angles (12 pairs total).
Angle 1 and angle 3 are called vertical angles. Angle 1 and Angle 5 are called
corresponding angles. Angle 1 and angle 8 are called alternating exterior angles.
Angle 3 and angle 5 are called alternating interior angles.
Step 3 Using the diagram, list all pairs of:
a. Vertical angles
b. Corresponding angles
c. Alternating Exterior angles
d. Alternating Interior angles
Try This
Using the table from Step 1, what conclusion can you draw about:
1. Vertical angles
2. Corresponding angles
3. Alternating Exterior angles
4. Alternating Interior angles
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