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Chapter 2
Geometry
25
Mathematics
9th Grade
02/10/2010

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Cards

Term
Inductive Reasoning
Definition
The reasoning we use to arrive at an educated guess, or conjecture
Term
Counterexample
Definition
If you come up with an illustration to show the conjecture is false
Term
Conditional Statement
Definition
An " If...then "
Term
"If" part is the hypothesis and the "then" part is the conclusion.
Definition
Term
Converse
Definition
a conditional you switch the hypothesis and the conclusion(flip it)
Term
Negation
Definition
change a statement to its opposite
Term
inverse
Definition
to make the statement not true (adding not)
Term
deductive reasoning
Definition
coming up with the logical conclusion based on the true statements
Term
If a conditional and its conditional and its converse is true, then the statement can be combined.
Definition
Term
Reflexive property
Definition
segments, PQ=PQ angles m<1=m<1
Term
symmetric property
Definition
segment, AB=CD
Term
Transitive Property
Definition
segment, HG=JK and JK=LM then GH=LM and angles m a = m b and m b = m c
Term
Substitution property
Definition
a=b then a maybe replaced by b in any equation expression
Term
addition and Subtraction property
Definition
if a=b then a+b=b+c and a-c=b-c
Term
multiplication and division property
Definition
if a=b then a(c)=b(c) and a/c=b/c
Term
distributive property
Definition
a(b+c)=ab+ac
Term
Congruent segments / angles
Definition
AB=CD to AB=CD
Term
Vertical angles
Definition
angles across from each other and are congruent
Term
adjacent angles
Definition
next to each other
Term
Commplementary angles
Definition
2 or more angles that add up to 90 degrees
Term
Supplementary angles
Definition
2 or more angles that add up to 180 degrees
Term
vertical angle therom card1
Definition
If 2 angles are supplementary of the same angle, then the 2 angles are congruent
Term
vertical angle therom card2
Definition
If 2 angles are complements of the same angle, then 2 angles are congruent.
Term
vertical angle therom card3
Definition
All right angles are congruent
Term
vertical angle therom card4
Definition
If 2 angles are congruent and supplementary, then each is a right angle
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