# Shared Flashcard Set

## Details

Chapter One Vocab
Definitions from Chapter One
25
Mathematics
11/09/2010

Term
 Point
Definition
 Smallest unit in geometry; can represent a location/vertex.
Term
 Line
Definition
 Collection of pts that extend forever in two opposite directions.
Term
 Ray
Definition
 A collection of pts that extend forever in one direction.
Term
 Segment
Definition
 Collection of points between two end points.
Term
 Plane
Definition
 Flat surface that extends forever in all directions.
Term
 Equidistance
Definition
 Two points the same distance from a third point.
Term
 Congruent
Definition
 Two shapes that are the exact same.
Term
 Equal
Definition
 Two numbers having the same value.
Term
 Collinear
Definition
 Two or more points on the same line.
Term
 Coplaner
Definition
 Three or more points on the same plane.
Term
 Parallel
Definition
 Lines/planes that never touch and are going in the same direction.
Term
 Scew lines
Definition
 Lines in different planes that never touch and go in different directions.
Term
 Interesecting
Definition
 Lines/planes that touch at a point/line.
Term
 Theorem
Definition
 A rule we know is true
Term
 Postulate
Definition
 A rule we assume is true.
Term
 Midpoint
Definition
 The point that is equidistance from end points of a line segment.
Term
 Angle
Definition
 Two rays that share an end point.
Term
 Vertex
Definition
 Where rays meet.
Term
 Acute Angle
Definition
 Measures between 0-90 degrees.
Term
 Obtuse Angle
Definition
 An angle between 91-180 degrees.
Term
 Straight Angle
Definition
 An angle measuring exactly 180 degrees.
Term
 Right Angle
Definition
 An angle that measures exactly 90 degrees.
Term
 Zero Angle
Definition
 An angle measuring exactly 0 degrees.
Term
 Bisector
Definition
 Cuts an object into two congruent parts (angle, segment)
Term