This document is from a math lesson on angles associated with parallel lines. It defines exterior and interior angles and discusses vertical angles, supplementary angles, alternate interior angles, and corresponding angles. It provides examples of finding the measure of unknown angles using properties of parallel lines and transversals. The homework assignments involve applying these concepts to solve problems involving angles formed by parallel lines and transversals.

1. Module 8.2 Lesson 9 Angles Associated with Parallel Lines.notebook
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3x + 5x - 21
Module 8.2 Lesson 9
Angles Associated with
Parallel Lines
HW
p88 ALL
Do Now:
1. Find the value of each angle
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12.
Homework
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2. Module 8.2 Lesson 9 Angles Associated with Parallel Lines.notebook
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13. Homework
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Homework
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EXTERIOR ANGLES
INTERIOR ANGLES
INTERIOR ANGLES
EXTERIOR ANGLES
EXTERIOR ANGLES
EXTERIOR ANGLES
Exterior Angles­ angles that are on the OUTSIDE of the parallel lines.
Interior Angles­ are angles that are on the INSIDE of the parallel lines.
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We also have Vertical Angles, Name them: ______________
We also have Supplementary Angles, Name them: _________
Alternate Interior Angles
Alternate Exterior Angles
Corresponding Angles
2 and 3, 1 and 4, 6 and 7,
8 and 5
1 and 2, 3 and 4, 5 and 6,
7 and 8, 1 and 3, 2 and 4

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1 2
3 4
5 6
7
8
s
r
t

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1 2
3 4
5 6
7
8
s
r
t
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a b
c d
e f
g
h
transversal

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2. Olive Street crosses two parallel railroad tracks, as shown below (not drawn to scale).
Railroad Tracks
Olive Street
1
230o
What is the measure of angle 1?
Show your work.
Answer ____________________ degrees
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5. In the diagram below, line MN and line OP are parallel, and transversal k intersects both lines.
k
M N
O P
1 2
3 4
5 6
7 8
Name two angles in the diagram that are congruent to 4.
Answer ___________________ and _____________________
On the lines below, explain how you determined these angles are
congruent to 4.
____________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________
_____________________________________________________________________________________
____________________________________________________________________________
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