Page 94 - TB_6B
P. 94
Learn about the relationship between parallel lines and corresponding angles.
The picture on the right shows AC D
how to draw 2 parallel lines, CD a F
and EF, that meet with AB using a E
b
pair of triangle rulers.
Are a and b congruent?
B
When 2 parallel lines, CD and EF, are drawn using the method above, the
corresponding angles that are formed with AB, a and b, are congruent.
Measure the angles with a protractor to check.
70 80 90 100 710106102050130
110 100 80
60
What you need: 20 50130 120 14400 30 Protractor
160 1530014040
150
60 90 60 160
20
0 10 0 30 30 0 170 180
180170 10 0
A D
C
a
EF
b
B
When 2 lines, CD and EF, are drawn so that the corresponding angles
formed with AB are equal, the 2 lines, CD and EF, are parallel.
Parallel lines and corresponding angles
When 2 lines intersect with a transversal,
2 corresponding angles are congruent if the 2 lines are parallel.
2 lines are parallel if the 2 corresponding angles are congruent.
25. Find the Angle’s Partner 83
The picture on the right shows AC D
how to draw 2 parallel lines, CD a F
and EF, that meet with AB using a E
b
pair of triangle rulers.
Are a and b congruent?
B
When 2 parallel lines, CD and EF, are drawn using the method above, the
corresponding angles that are formed with AB, a and b, are congruent.
Measure the angles with a protractor to check.
70 80 90 100 710106102050130
110 100 80
60
What you need: 20 50130 120 14400 30 Protractor
160 1530014040
150
60 90 60 160
20
0 10 0 30 30 0 170 180
180170 10 0
A D
C
a
EF
b
B
When 2 lines, CD and EF, are drawn so that the corresponding angles
formed with AB are equal, the 2 lines, CD and EF, are parallel.
Parallel lines and corresponding angles
When 2 lines intersect with a transversal,
2 corresponding angles are congruent if the 2 lines are parallel.
2 lines are parallel if the 2 corresponding angles are congruent.
25. Find the Angle’s Partner 83
