1.
All right angles are ____________.
A.
congruent
B.
complementary
C.
180°
D.
transitive
Hint
2.
Which statement explains why
A.
All right angles are congruent.
B.
Angles adjacent to the same angle or to congruent angles are congruent.
C.
Vertical angles are congruent.
D.
Angles complementary to the same angle or to congruent angles are congruent.
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.
20
C.
180
D.
80
Hint
4.
In the picture,
and
are vertical. If
then what is
A.
81
B.
28
C.
90
D.
162
Hint
5.
If
and
form a linear pair and
m
= 72, find
m
.
A.
144
B.
108
C.
18
D.
72
Hint