# Shared Flashcard Set

## Details

Geometry-Chapter 2
Chapter 2 Definitions
29
Mathematics
08/24/2009

Term
 convex set
Definition
 the set of points in which every segment that connects points of the set lies entirely in the set
Term
 nonconvex set
Definition
 a set in which at least one segment that connects points within the set has points that lie outside the set
Term
 antecedent
Definition
 the "if" clause of a conditional
Term
 consequent
Definition
 the "then"clause of a conditional
Term
 converse
Definition
 p=>q is q=>p
Term
 midpoint
Definition
 The point of the segment equidistant from the segment's endpoint
Term
 if and only if
Definition
 biconditional
Term
 biconditional
Definition
 a statement that includes a conditional and its converse
Term
 circle
Definition
 the set of points in a plane at a certain positive distance (its radius) from a certain point(its center)
Term
Definition
 a segment connecting the center of a circle or a sphere with a point on that circle or sphere; also the length of that segment
Term
Definition
Term
 diameter
Definition
 a segment connecting two points on the circle or sphere and containing the center of the circle of sphere; also, the length of the segment
Term
 union
Definition
 the set of elements that are in either or both sets,denoted by U
Term
 intersection of two sets
Definition
 The set of elements that are in both sets
Term
 polygon
Definition
 the union of segments in the same plane such that each segment intersects exactly two others, one at each endpoints; and if two segments share an endpoint, they are not collinear
Term
 angle
Definition
 the union of two rays that have the same endpoint
Term
 n-gon
Definition
 polygon with n sides
Term
 triangle
Definition
 3-sided polygon
Term
Definition
 4-sided polygon
Term
 pentagon
Definition
 5-sided polygon
Term
 hexagon
Definition
 6-sided polygon
Term
 heptagon
Definition
 7-sided polygon
Term
 octagon
Definition
 8-sided polygon
Term
 nonagon
Definition
 9-sided polygon
Term
 decagon
Definition
 10-sided polygon
Term
 convex polygon
Definition
 a polygon whose polygonal region is a convex set
Term
 equilateral triangle
Definition
 a triangle with a three sides the same length
Term
 isosceles triangle
Definition
 a triangle with a least two sides equal in length
Term
 scalene triangle
Definition
 a triangle with no two sides of equal length
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