# Shared Flashcard Set

## Details

Chapter 1 Vocab
Flashcard DB
39
Mathematics
10/18/2012

Term
 Point
Definition
 A point is a specific location in space with no size or shape. [image]
Term
 Line
Definition
 A line is a never-ending straight path. [image]
Term
 Segment
Definition
 A segment is a part of a line containing two endpoints and all the points between them. [image]
Term
 Ray
Definition
 A ray is a part of a line that extends indefinitely in one direction from a fixed point.[image]
Term
 Plane
Definition
 A plane is a two-dimensional flat surface that extends in all directions.[image]
Term
 Opposite Rays
Definition
 Opposite rays are Two rays that are part of the same line and have only their endpoints in common. In the figure, [image] and [image] are opposite rays.[image]
Term
 Collinear
Definition
 Collinear points are Three or more points that lie on the same line.[image]
Term
 Coplanar
Definition
 Coplanar are Points or lines that lie in the same plane.[image]
Term
 Angle
Definition
 An angle is a figure formed by two rays with a common endpoint.[image]
Term
 Midpoint
Definition
 A midpoint is on a line segment, the point that is halfway between the endpoints.

[image]

Term
 Bisector
Definition
 A bisector is ray whose endpoint is the vertex of the angle and is located in the interior of the angle. It separates a given angle into two angles with equal measure.[image]
Term
 Congruent
Definition
 Congruent is Having the same measure.[image]
Term
 Vertex
Definition
 The vertex is The common endpoint of the rays forming the angle.[image]
Term
 Acute Angles
Definition
 An acute angle is an angle with a measure greater than 0° and less than 90°.[image]
Term
 Obtuse Angles
Definition
 An obtuse angle is an angle that measures more than 90° but less than 180°.[image]
Term
 Right Angle
Definition
 An right angle is an angle that measures exactly 90°.[image]
Term
 Straight Angles
Definition
 A straight angle is an angle that measures 180°.[image]
Term
 Complementary Angles
Definition
 Complementary angles are two angles are complementary if the sum of their measures is 90°.[image]
Term
 Supplementary Angles
Definition
 Supplementary angles are two angles are supplementary if the sum of their measures is 180°.[image]
Term
 Vertical Angles
Definition
 Vertical angles are opposite angles formed by the intersection of two lines.[image]
Term
Definition
 Adjacent angles are Angles that have the same vertex, share a common side, and do not overlap.[image]
Term
 Linear Pair
Definition
 Linear Pairs are Two angles that are adjacent and supplementary.[image]
Term
 Perpendicular Lines
Definition
 Perpendicular lines are lines which meet to form right angles and whose slopes have a product of -1.[image]
Term
 Polygon
Definition
 A polygon is a simple closed figure in a plane formed by three or more line segments.[image]
Term
 Concave Polygon
Definition
 A concave polygon is a polygon for which a point on at least one of its diagonals lies outside the polygon. [image]
Term
 Convex Polygon
Definition
 A convex polygon is a polygon for which all diagonals are located in the interior of the polygon.[image]
Term
 Regular Polygon
Definition
 A regular polygon is a polygon that has all sides congruent and all angles congruent.[image]
Term
 Irregular Polygon
Definition
 Any polygon that is not a regular polygon. A irregular polygon is a polygon whose sides are not all the same length or whose interior angles do not all have the same measure.[image]
Term
 Diagonal
Definition
 A diagonal is a segment joining two nonconsecutive vertices of a polygon. [image]
Term
 Side
Definition
 A side is the segments that form a closed figure.[image]
Term
 Perimeter
Definition
 The perimeter is the distance around a closed geometric figure.[image]
Term
 Triangle
Definition
 A triangle is a polygon having three sides.[image]
Term
Definition
 A quadrilateral is a polygon having four sides.[image]
Term
 Pentagon
Definition
 A Pentagon is a polygon with five sides.[image]
Term
 Hexagon
Definition
 A hexagon is a polygon with six sides. [image]
Term
 Octagon
Definition
 A octagon is a polygon with eight sides. [image]
Term
 Decagon
Definition
 A decagon is a polygon with ten sides. [image]
Term
 Dodecagon
Definition
 [image]A Dodecagon is a polygon with 12 sides.
Term
 n-gon
Definition
 A n-gon is polygon with n sides.[image]
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