1.
Which problem-solving strategy is used in indirect proofs?
A.
decision-making
B.
guess and check
C.
working backward
D.
draw a diagram
Hint
2.
a
>
b
means that ___________.
A.
a
=
b
+
c
, for some positive number
c
B.
a
+ c =
b
, for some positive number
c
C.
a
+
b
= 0
D.
a
b
Hint
3.
Choose the possible measure for
1 in the figure shown.
A.
180°
B.
0°
C.
11°
D.
110°
Hint
4.
Complete the section of the indirect proof.
Assume
m
A
=
m
B
and
m
B
=
m
C
.
So, by ____________,
m
A
=
m
C
.
A.
angle addition property
B.
transitive property
C.
CPCTC
D.
reflexive property
Hint
5.
Complete the section of the indirect proof.
m
W
is a right angle. Therefore,
m
W
= 90° by _______________.
A.
angle addition postulate
B.
definition of perpendicular lines
C.
definition of perpendicular bisectors
D.
definition of a right angle
Hint