# Shared Flashcard Set

## Details

geometry
definitions
29
Mathematics
12/16/2009

Term
Definition
 two angles that share a side and vertex
Term
 linear pair property
Definition
 if two angles form a linear pair, then they are supplementary.
Term
 right angle
Definition
 angle that adds up to 90 degrees
Term
 acute angle
Definition
 angle thats measure is less than 90 degrees
Term
 obtuse angle
Definition
 angle thats measure is more than 90 degrees and less than 180 degrees
Term
 perpindicular lines
Definition
 two lines that intersect to form a right angle
Term
 parallel lines
Definition
 two coplanar lines that do not intersect
Term
 segment bisector
Definition
 a line that
Term
 perpindicular bisector
Definition
 a bisector that is perpindicular to a segment
Term
 angle bisector
Definition
 a line or ray that divides an angle into two
Term
 inscribed circle
Definition
 a circle that is inside a triangle and touches three sides
Term
 circumscribed circle
Definition
 a circle outside the triangle ane contains all three vertices
Term
 rigid transformation
Definition
 a transformation that does not change its size or shape of a figure
Term
 translation
Definition
 every point of a figure
Term
 rotation
Definition
 every point of a figure moves around a given point known as the center
Term
 reflection
Definition
 ever point in a geometric figure is flipped across the
Term
 proof
Definition
 a convincing argument
Term
 condition
Definition
 if-then statements
Term
 deduction/deductive reasoning
Definition
 the process of drawing logically certain
Term
 converse
Definition
 when you interchange the hypothesis and the conclusion of a conditional statement
Term
 logical chain
Definition
 three different conditionals are linked together
Term
Definition
 two angles in a plane that share a common vertex and a common side but have no interior points in common
Term
 biconditional
Definition
 a statement using if and only if
Term
 counter example
Definition
 an example that proves that a statement, then a conjecture is false
Term
 conclusion
Definition
 the phrase following the word then in a conditional statement; the final statement of an argument
Term
 equivalence relation
Definition
 any relation that satisfies the reflexive
Term
 theorum
Definition
 a statement that has been proven to be true deductively
Term