Points, Lines, Planes, Segment Addition Postulate and Midpoints
Angle Relationships
Counterexamples and Compound and Conditional Statements
Conditional Statements, Laws of Detachment and Syllogism
Proof
Reasons
100

Points on the same line are called ____________ points.

Collinear

100

Vertical angles are always ________________.

Congruent

100

Which is the symbolic notation for the converse of a conditional statement?

a. P --> Q

b. ~P --> ~Q

c. ~Q --> ~P

d. Q --> P

d. Q --> P

100

Which of the following symbolic notations represents the inverse of a conditional statement:

A. P --> Q

B. ~Q --> ~P

C. ~P --> ~Q

D. Q --> P

C. ~P --> ~Q

100

Which reason justifies the following statement:

"If AB = CD, then AB + XY = CD + XY

a. Subtraction Property

b. Substitution Property

c. Addition Property

d. Transitive Property

C. Addition Property

200

Two points that do not lie on the same plane would be referred to as ______________ points.

non-coplanar

200

1. Any 2 angles whose sum is 90 degrees are ___________ angles.

2. Any 2 angles whose sum is 180 degrees are ___________ angles.

1. Complementary

2. Supplementary

200

Which of the following symbolic notations represents p or the negation of q?

A. P ^ Q

B. P ^ ~Q

C. ~P v Q

D. P v ~Q

D. P v ~Q
200

For a biconditional to be true, which 2 statements have to be true?

A. Conditional and Inverse

B. Conditional and Converse

C. Inverse and Converse

D. Conditional and Contrapositive

B. Conditional and Converse

200

Which reason justifies the following statement?

If AB = BC, then AB is congruent to BC

Definition of Congruence

300

Given point A (-2, 4) and point B (3, 5), what formula would I use to find the length of line segment AB?

Distance Formula

300

Two angles that are across from each other and formed by intersecting lines are what type of angles?

Vertical Angles

300

Which of the following compound statements is false

1. A circle has no sides and a pentagon has 5 sides

2. A circle has sides or a pentagon has 5 sides

3. A circle has no sides or a pentagon has 4 sides

4. A circle has sides and a pentagon has 5 sides

4. A circle has sides and a pentagon has 5 sides

300

Which law justifies the following conclusion:

Given: If Mark studies, then he will get an A.

Given: If Mark gets an A, then he will get $25.

Conclusion: If Mark studies, then he will get $25.

Law of Syllogism

300

What reason justifies the following statement:

If Angle 1 and Angle 2 form a linear pair, then Angle 1 and Angle 2 are supplementary.

A. Definiton of Supplementary Angles

B. Congruent Supplements Theorem

C. Linear Pair (Supplement) Theorem

D. Definition of Perpendicular

C. Linear Pair (Supplement) Theorem

400
If point B is between A and C, and line AC = 36, AB = 6x + 1 and BC = x + 7, what equation would I set up to solve for x.

6x + 1 + x + 7 = 36

400

If angle ABC and angle DBC are vertical angles and angle ABC = 3x + 23 and angle DBC = 7x - 37, what equation would I set up to solve for x?

3x + 23 = 7x - 37

400

What is the contrapositive of the following statement, 

"If it is Saturday, then there is no school.

If there is school, then it is not Saturday.

400

What is the inverse of the following statement?

If I live in Cloverdale, then I live in Indiana.

If I do not live in Cloverdale, then I do not live in Indiana.

400

Which reason justifies the following statement

If Angle 1 + Angle 2 = Angle 4 and Angle 2 = Angle 3, then Angle 1 + Angle 3 = Angle 4


Substitution Property

500

If B is the midpoint of line AC, and AB = 9x-1 and BC=2X + 27, what would be the equation I would set up to solve for X.

9x - 1 = 2x + 27

500

If angles D and E are supplementary and Angle D = 7x+3 and Angle E = 16x-5, what equation would I set up to solve for x?

7x + 3 + 16x - 5 = 180

500

What would be a counterexample to the statement below:

Every single day has exactly 24 hours

A day when we move the clock up or back for daylight savings time

500

Is the following conclusion justified by the Law of Detachment, Law of Syllogism or is it invalid?


Given: If Mr. Williams buys a new golf club, then he will go golfing.

Given: Mr. Williams goes golfing

Conclusion: Mr. Williams bought a new golf club

Invalid

500

What reason justifies the following statement:

If WX = XY and XY = YZ, then WX = YZ

Transitive Property