Page 171 - TB_5B
P. 171
Answers
Unit 17. Congruent Angles Activity 2 P. 6~7
1. a.
60, 120, 60, 120 b.
60, 120, 2 c.
1 P. 2~3
,2
2 . a . 140 b . 60, 120 c . 70, 80
,3 3 . 50, 50 P. 8~9
60, 50
70, 80
110, 70
110
130, 90
,4 Activity 3
1. b. l
35Ø
n
a
When 2 lines intersect, the angles that are b
across from each other have the same measure.
m 40Ø
Activity 1 P. 4~5
1 . a . The lines are parallel. a 35Ø, b 40Ø
c a+ b
b . The lines are parallel. c
2. a. b. 35Ø+ 40Ø
75Ø
bb
c
c
3 . a . 60 b . 140 c . 60, 120
160
Unit 17. Congruent Angles Activity 2 P. 6~7
1. a.
60, 120, 60, 120 b.
60, 120, 2 c.
1 P. 2~3
,2
2 . a . 140 b . 60, 120 c . 70, 80
,3 3 . 50, 50 P. 8~9
60, 50
70, 80
110, 70
110
130, 90
,4 Activity 3
1. b. l
35Ø
n
a
When 2 lines intersect, the angles that are b
across from each other have the same measure.
m 40Ø
Activity 1 P. 4~5
1 . a . The lines are parallel. a 35Ø, b 40Ø
c a+ b
b . The lines are parallel. c
2. a. b. 35Ø+ 40Ø
75Ø
bb
c
c
3 . a . 60 b . 140 c . 60, 120
160
