Lesson 2.6 Parallel Lines and Transversals
Lesson 2.6 Parallel Lines and Transversals
Lesson 2.6 Parallel Lines and Transversals
6 Parallel Lines
cut by a Transversal
1
4
5
8
6
7
l
m
AB
is an example of a transversal.
It intercepts lines l and m.
1 2
4 3
1 2
4 3
5 6
8 7
lm
Nonparallel Lines
b || c
5 6
8 7
Exterior
Interior
Exterior
1 2
4 3
5 6
8 7
AIA
1 2
4 3
5 6
8 7
4 6
3 5
1 2
4 3
SSI
5 6
8 7
4 5 180
3 6 180
1 2
4 3
SSE
5 6
8 7
1 8 180
2 7 180
1 2
4 3
AEA
5 6
8 7
1 7
2 8
CA
Congruent
Supplementary
s || t and c || d.
Name all the angles that are congruent to 1.
Give a reason for each answer.
1 2
5 6
9
10
13 14
3 1
corresponding angles
6 1
vertical angles
8 1
9 1
corresponding angles
14 1
1 4
5 10
t
3
7
11 12
15 16
4
8
d
120
60
120 5
60
2 60
4 120
6 60
120
Lets Practice
m<1=120
Find all the remaining
angle measures.
Another
practice
problem
Parallel
Lines
and Transversals
40
120
Exterior
Interior
7
1
3
2
4
5
8
Exterior