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Geometry Unit 2 Review
Unit 2 Reasoning and Proof flashcards
23
Mathematics
8th Grade
09/11/2012

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Term
biconditional
Definition
a single true statement that combines a true conditional and its true converse
Term
conclusion
Definition
the part q following then
Term
conditional
Definition
an if-then statement
Term
contrapositive
Definition
Negate both the hypothesis and the conclusion of the converse
Term
converse
Definition
exchange the hypothesis and the conclusion
Term
deductive reasoning
Definition
the process of reasoning logically from given statements or facts to a conclusion
Term
equivalent statements
Definition
statements with the same truth value
Term
hypothesis
Definition
the part p following if
Term
inverse
Definition
negate both the hypothese and the conclusion of the conditional.
Term
Law of Detachment
Definition
if p to q is true, and p is true, then q is true.
Term
Law of Syllogism
Definition
If p to q is ture and q to r is true, then p to r is true.
Term
negation
Definition
the opposite of the statement
Term
paragraph proof
Definition
a proof written in sentences as a paragraph
Term
proof
Definition
a convincing argument that uses deductive reasoning
Term
Properties of Congruence
Definition
reflexive, symmetric, transitive
Term
Properties of Equality
Definition
addition, subtraction, multiplication, division, substitution
Term
Reflexive Property
Definition
a=a
Term
symmetric property
Definition
if a=b, then b=a.
Term
theorem
Definition
a conjecture or statement that you prove true
Term
Transitive Property
Definition
if a=b and b=c, then a=c
Term
truth value
Definition
either true or false
Term
two-column proof
Definition
statement on the left. justification on the right.
Term
vertical angle
Definition
congruent angles.
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