Math quiz tom. 9/6/19
is statement based on known information or observation that is believed to be true but not yet proven
conjecture
is an example that is used to disprove a statement; it contradicts a statement or argument
counterexample
in geometry gives the meaning of a term based only on commonly understood words, undefined terms, or other previously defined terms
definition
is a statement that is accepted in geometry without proof. In the same way that you can use undefined terms to help define other terms, you can use postulates to help prove other statements
postulate/axiom
is a characteristic of all members of a set. Properties can be used as justifications of steps in a proof, just like axioms or previously proved theorems
property
is a statement that has been proved using definitions, postulates, properties, previously proven theorems, and logical reasoning
theorem