# Shared Flashcard Set

## Details

Shape Definitions - Chap. 8
Shape Definition for Chapter 8 test Jan. 13
34
Mathematics
01/12/2011

Term
 Line Segment
Definition
 part of a line and has 2 endpoints
Term
 Ray
Definition
 part of a line. It has only one endpoint and extends forever in one direction.
Term
 Parallel Lines
Definition
 never cross and stay the same distance apart
Term
 Intersecting Lines
Definition
 pass through the same point
Term
 Perpendicular Lines
Definition
 intersecting lines that form square corners
Term
 Point
Definition
 exact location in space
Term
 Line
Definition
 straight path of points that goes on forever in two directions
Term
 Plane
Definition
 endless flat surface
Term
 Angle
Definition
 formed by two rays that have the same endpoint
Term
 Vertex
Definition
 common endpoint
Term
 Protractor
Definition
 to measure and draw angles
Term
 Degrees
Definition
 angles are measured in
Term
 Acute angle
Definition
 has a measure between 0 and 90
Term
 Right angle
Definition
 has a measure of 90
Term
 Obtuse angle
Definition
 has a measure between 90 and 180
Term
 Straight angle
Definition
 has a measure of 180
Term
 Polygon
Definition
 a closed plane figure made up of line segments
Term
 Regular Polygon
Definition
 sides of equal length and angles of equal measure
Term
 Triangle
Definition
 polygon with 3 sides
Term
Definition
 polygon with 4 sides
Term
 Pentagon
Definition
 polygon with 5 sides
Term
 Hexagon
Definition
 polygon with 6 sides
Term
 Octagon
Definition
 polygon with 8 sides
Term
 Equilateral triangle
Definition
 all sides are the same length
Term
 Isosceles triangle
Definition
 two sides are the same length
Term
 Scalene Triangle
Definition
 no sides are the same length
Term
 Right triangle
Definition
 one angle is a right angle
Term
 Acute triangle
Definition
 all three angles are acute angles
Term
 Obtuse triangle
Definition
 one angle is an obtuse angle
Term
 Parallelogram
Definition
 both pairs of opposite sides parallel and equal in length
Term
 Trapezoid
Definition
 only one pair of parallel sides
Term
 Rectangle
Definition
 a parallelogram with four right angles
Term
 Rhombus
Definition
 a parallelogram with all sides the same length
Term
 Square
Definition
 a rectangle with all sides the same length
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