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Conditional statement review quiz

Authored by Lisa Bohne

Mathematics

9th - 12th Grade

Used 1+ times

Conditional statement review quiz
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5 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The conditional statement: "If an angle is 80 degrees, then it is not a right angle". What is the inverse? Is the inverse true or false?

If an angle is not 80 degrees, then it is a right angle.

False

If an angle is not a right angle, then it is 80 degrees.

False

If an angle is a right angle, then it's not 80 degrees.

True

An angle is 80 degrees if and only if it's not a right angle.

True

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The conditional statement: "If a pair of angles are supplementary, then they have a sum of 180 degrees".

What is the converse?

If a pair of angles are not supplementary, then they do not have a sum of 180 degrees.

If they have a sum of 180 degrees, then a pair of angles are supplementary.

If they do not have a sum of 180 degrees, then a pair of angles are not supplementary.

A pair of angles are supplementary if and only if they have a sum of 180 degrees.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Conditional: If I study, then I will not get a bad grade.

New statement: If I get a bad grade, then I did not study.

The new statement is the ____________ of the conditional.

Converse

Inverse

Contrapositive

Biconditional

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The statement "If a number is divisible by 3, then it is odd" is false. Which of the following would be a good counterexample to prove this is false?

15

8

6

This statement is true, so there is no counterexample needed.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Conditional: "If an angle is 60 degrees, then it is acute" is true. Give the truth value of the inverse of the statement. If false, also give a counterexample.

True, no counterexample needed.

False, counterexample is a 100 degree angle.

False, counterexample is a 60 degree angle is obtuse.

False, a counterexample is a 40 degree angle.

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