1.
All right angles are ____________.
A.
congruent
B.
complementary
C.
180°
D.
transitive
Hint
2.
If
and
are vertical angles and
and
find
A.
68
B.
43
C.
72
D.
23
Hint
3.
If
1 and
2 form a linear pair and m
1 = 2
x
+ 16 and
m
2 = 50
x
+ 60, find m
2.
A.
160
B.
180
C.
80
D.
20
Hint
4.
In the picture,
and
are vertical. If
then what is
A.
162
B.
28
C.
81
D.
90
Hint
5.
If
and
form a linear pair and
m
= 72, find
m
.
A.
108
B.
18
C.
72
D.
144
Hint