Download 3-1 Parallel Lines and Transversals

Geometry Tuesday 11-11-14
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Warm-ups – Complete Slide below
– Check in and discuss A#3.1
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Discussion/Notes/Guided Practice
– Section 3.2 Angles and Parallel Lines
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Assignment:
– A#3.2 Page 136 #14-25, 32, 34, 36
Today, you will be able to:
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Use properties of parallel lines
to determine congruent angles
Use algebra to find angle
measures
Success Criteria:
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Q&A
Exploration Activity
Foldable
Guided Practice
Homework
Warm ups – Angle exploration
Cut out one set of angles (1 – 8).
 Use these angles to determine special
angle relationships with the other
angles.
 List any special relationships you find:
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Compare with your partner.
3-2 Parallel Lines and the
Angles Formed
Corresponding Angles Postulate:
2
1
3 4
6 5
7 8
Alternate Interior Angles Theorem:
Alternate Exterior Angles Theorem:
2
a
1
3 4
b
6 5
7 8
Consecutive Interior
Angles Theorem:
2
a
3 4
b
Perpendicular Transversal
Theorem:
1
6 5
7 8
Proof of Alternate Interior
Angles Theorem
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2
a
1
3 4
b
6 5
7 8
Proof of Consecutive Interior
Angles Theorem
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2
a
1
3 4
b
6 5
7 8
Example #1
Example #2
Example #3
Assignment #3.2
Page 136
#14-25, 32, 34, 36