Quiz 2.1-2.6

<ABD + <DBC = <ABC

Angle Addition postulate

9-3x=13-7(x+4)... what is the first ALGEBRAIC step for solving this proof?

Distributive property

Law of Detachment

If it is thunderstorming, then the game will be delayed. It is thunderstorming. The game is delayed.

Law of Syllogism

If p-->q and q-->r are true statements, then p-->r is a true statement.

What is the conclusion: If two angles are vertical angles, then the angles are congruent. If angles are congruent, then they have the same measure.

If two angles vertical angles, then they have the same measure.

What is the conclusion: If an angle measures less than 90, then it is acute. Measure of angle G is 71.

Measure of angle G is acute.

POE stands for what?

Property of Equality

What property is demonstrated: <BDE = <BDE

Reflexive property

AB+BC=AC

Segment Addition Postulate

When combining like terms its called

Simplifying

When you replace a term with something it is equivalent to... it is called?

Substitution

What property is demonstrated: PT = QS, then QS = PT

Symmetric property

Definition of Congruence

The two line segments are congruent.

If m<C=40, and 3x+14+8x=m<C, then 3x+14+8x=40

Transitive property

The first step in solving a proof should always be...

Write your givens

Find a counter example for: If you are in geometry then you are a freshmen.

You can be a sophomore

conditional statement

a statement that can be written in if-then form

Theorem

a statement that has been proven

postulate

a statement that is accepted as true without proof

inductive reasoning

looking for patterns and making conjectures