1.
Which problem-solving strategy is used in indirect proofs?
A.
guess and check
B.
working backward
C.
decision-making
D.
draw a diagram
Hint
2.
Which assumption would you make to start an indirect proof of the statement Bob took the dog for a walk
A.
Bob does not have to take the dog for a walk.
B.
Bob may take the dog for a walk.
C.
Bob did not take the dog for a walk.
D.
Bob will take the dog for a walk.
Hint
3.
State the assumption that could be used to start an indirect proof of the statement
AB
+
BC
>
DE
.
A.
AB
+
BC
<
DE
B.
AB
+
BC
=
DE
C.
AB
+
BC
DE
D.
AB
+
BC
DE
Hint
4.
What is another name for an indirect proof?
A.
paragraph proof
B.
proof by assumption
C.
proof by contradiction
D.
default proof
Hint
5.
The type of reasoning that uses a number of examples to arrive at a conclusion is __________ .
A.
deductive reasoning
B.
exemplary reasoning
C.
contradictory reasoning
D.
inductive reasoning
Hint