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1. |
In the figure, ABCD is a square. Which of the following is a valid conjecture about points A, B, C, and D? |
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A. |
AB = BD |
B. |
AB = CD |
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C. |
None of the statements are valid conjectures. |
D. |
AB + CD = 12 |
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Hint |
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2. |
Daniel wants to send Jasmine flowers for her birthday. At the flower store, he can choose between roses, irises, or carnations. The salesperson tells Daniel that 50% of the customers buy roses, 30% buy carnations, and 20% buy irises. Which of the following is a valid conjecture? |
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A. |
The salesperson likes carnations. |
B. |
More customers buy roses than carnations. |
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C. |
Jasmine will be excited to receive flowers for her birthday. |
D. |
Daniel will buy Jasmine irises. |
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Hint |
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3. |
Determine the contrapositive of the following if-then statement. If three points are noncollinear, then they form a triangle. |
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A. |
If three points do not form a triangle, then they are noncollinear. |
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B. |
If three points do not form a triangle, then they are not noncollinear. |
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C. |
If three points form a triangle, then they are noncollinear. |
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D. |
If three points are not noncollinear, then they do not form a triangle. |
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Hint |
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4. |
The Law of Detachment and other laws of logic can be used to provide a system for reaching logical conclusions, called _____________. |
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A. |
reasonable doubt |
B. |
inductive reasoning |
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C. |
detachment reasoning |
D. |
deductive reasoning |
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Hint |
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5. |
Which property of equality justifies the statement if x – 2 = 9, then x = 11? |
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A. |
Symmetric Property of Equality |
B. |
Transitive Property of Equality |
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C. |
Multiplication Property of Equality |
D. |
Addition Property of Equality |
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Hint |
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6. |
Justify step 2 in solving  |
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A. |
Multiplication Property (=) |
B. |
Division Property (=) |
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C. |
Subtraction Property (=) |
D. |
Distributive Property (=) |
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Hint |
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7. |
Which of the following is not one of the five essential parts needed to construct a good proof? |
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A. |
Develop a system of inductive reasoning. |
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B. |
List the given information. |
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C. |
If possible, draw a diagram to illustrate the given information. |
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D. |
State the theorem to be proved. |
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Hint |
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8. |
For the proof shown, provide the reason for part f. |
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A. |
Definition of Addition |
B. |
Definition of congruent segments |
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C. |
Symmetric Property of Equality |
D. |
Definition of a line |
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Hint |
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9. |
All right angles are ____________. |
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A. |
congruent |
B. |
complementary |
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C. |
180° |
D. |
transitive |
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Hint |
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10. |
If and form a linear pair and find  |
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A. |
86 |
B. |
106 |
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C. |
96 |
D. |
76 |
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Hint |
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11. |
What three things are accepted as true without verification or proof? |
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A. |
definitions, theorems, and postulates |
B. |
definitions, postulates, and undefined terms. |
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C. |
conclusions, hypotheses, and postulates |
D. |
theorems, postulates, and undefined terms |
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Hint |
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12. |
''If two angles are vertical, then they are congruent.'' is a true conditional, and 1 and 2 are vertical. Which is not true based on the Law of Detachment? |
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A. |
Both 1 and 2 are obtuse. |
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B. |
1 and 2 both have a measure of 45. |
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C. |
1 and 2 are not congruent. |
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D. |
1 and 2 are congruent. |
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Hint |
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13. |
What three properties hold true for congruence of segments? |
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A. |
reflexive, multiplication, and division |
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B. |
addition, subtraction, and multiplication |
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C. |
reflexive, symmetric, and substitution |
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D. |
reflexive, symmetric, and transitive |
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Hint |
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14. |
Write a truth table for p q. |
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A. |
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B. |
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C. |
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D. |
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15. |
Construct a truth table for p q. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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16. |
Which statement is the inverse of the statement angles with the same measure are congruent? |
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A. |
If two angles do not have the same measure, then they are not congruent. |
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B. |
If two angles are congruent, then they have the same measure. |
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C. |
If two angles have the same measure, then they are congruent. |
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D. |
If two angles are not congruent, then they do not have the same measure. |
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Hint |
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