ch3.4 parallel lines
TRANSCRIPT
Ch3.4_ParallelLines.notebook
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September 30, 2011
Chapter 3.4Parallel Lines
Postulate 9Parallel Lines Postulate
Transversal a line that crosses 2 or more lines
If two parallel lines are cutby a transversal, then thecorresponding angles are congruent(a.k.a. The "BigSmall" Rule)
Ch3.4_ParallelLines.notebook
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Which angles are equal to Angle A?
A
G
FE
DC
B
H
Which angles are equal to Angle F?
A
GFE
DCB
H
Ch3.4_ParallelLines.notebook
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Interior vs. Exterior
Interior
Exterior
Exterior
1 2
765
43
8
Alternate Exterior(equal angles)
Alternate Interior(equal angles)
Sameside Interior(complementary)
Ch3.4_ParallelLines.notebook
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1200 2
765
43
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Find the missing angle measures
Find the missing angle measures
450
A
H
G F
E
DC
B
K
JI