geometry ch 2
Terms
undefined, object
copy deck
 A type of logical statement that has two parts, a hypothesis and conplusion
 conditional statement
 a form of a conditional statement using "if" and "then" the if is the hypothesis and then is the conclusion.
 Ifthen statement
 The statement formed by switching the hypothesis and conclusion of a conditional statement.
 converse

The negative of a statement
symbol: ~  negation
 statement formed when negating the hypothesis and conclusion of a conditional statement
 inverse
 statement formed when you negate the hypothesis and conclusion of the converse of a conditional statement.
 contropositive
 two statements that are both true or both false.
 equivalent statements

two lines that intersect to form a right angle
symbol:(upside down T)  perpendicular lines
 a line that intersects the plane in a point and is perpendicular to ever line in the plane that it intersects it
 line perpendcular to a plane

a statement that that contains the phrase "if and only if"
symbol: â€¹â€•â€º  biconditional statement
 an argument based on deductive reasoning, which use facts, definitions, and accepted properties in a logical order.
 logical argument
 if pâ€•â€ºq is a true conditional statement and p is true, then q is true
 Law of Detachment
 if pâ€•â€ºq and qâ€•â€ºr are true conditional statements, then pâ€•â€ºr is true
 Law of Syllogism
 a true statement that follows as a result of other true statements.
 theorum
 a type of proof written as numbered statements and reasons that show the logical order of an argument.
 twocolumn proof