Properties of Parallel Lines

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Properties of Parallel Lines
GEOMETRY LESSON 3-1
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Properties of Parallel Lines
GEOMETRY LESSON 3-1
One angle must be an interior angle, and the
other must be an exterior angle.
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Properties of Parallel Lines
GEOMETRY LESSON 3-1
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Properties of Parallel Lines
GEOMETRY LESSON 3-1
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Properties of Parallel Lines
GEOMETRY LESSON 3-1
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Properties of Parallel Lines
GEOMETRY LESSON 3-1
a 65 Alternate Interior Angles Theorem
c 40 Alternate Interior Angles Theorem
a b c 180 Angle Addition
Postulate
65 b 40 180 Substitution Property of
Equality
b 75 Subtraction Property of Equality
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Properties of Parallel Lines
GEOMETRY LESSON 3-1
In the diagram below, m n. Use the diagram for
Exercises 15.
143
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