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20 Cards in this Set

  • Front
  • Back
An educated guess
Inductive Reasoning
Looking at several specific situations to arrive at a conjecture
A false example to show that a conjecture is not true
Statement that can be written in "if-then" form
The part of the conditional statement following the if
The part of the conditional statement following the then
Another if-then statement formed by exchanging the hypothesis and conclusion of a conditional
q -> p
The denial of a statement
A new conditional statement formed by negating both the hypothesis and conclusion
~p -> ~q
Conditional statement formed by negating the hypothesis and conclusion of the converse of the given conditional
~q -> ~p
Postulate 2-1
Through any two points, there is exactly one line.
Postulate 2-2
Through any three noncollinear points, there is exactly one plane
Postulate 2-3
A line contains at least two points
Postulate 2-4
A plane contains at least three noncollinear points
Postulate 2-5
If two points lie in a plane, then the entire line containing those two points lies in that plane
Postulate 2-6
If two planes intersect, then their intersecion is a line
Venn diagram
Diagram sometimes used to illustrate a conditional
Law of Detachment
If p -> q is a true conditional and p is true, then q is true
Deductive reasoning
A system for reaching logical conclusions using the law of detachment and other laws of logic
Law of Syllogism
If p -> q and q -> r are true conditionals, then p -> r is also true