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Shape Definitions - Chap. 8
Shape Definition for Chapter 8 test Jan. 13
34
Mathematics
5th Grade
01/12/2011

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Cards

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
Quadrilateral
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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