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quadrilateral
A two-dimensional (flat) shape with 4 sides
square
A two-dimensional shape with 4 congruent sides and 4 right angles
rectangle
A two-dimensional shape with two pairs of parallel sides and 4 right angles
trapezoid
A two-dimensional shape with 4 sides, exactly 1 pair of which are parallel
pentagon
A two-dimensional shape with 5 sides and 5 angles
hexagon
A two-dimensional shape with 6 sides and 6 angles
octagon
A two-dimensional shape with 8 sides and 8 angles
line segment
The set of all points between two endpoints
parallelogram
A two dimensional shape with 4 sides with both pairs of opposite sides parallel
rhombus
A two-dimensional shape with 4 congruent sides
equilateral triangle
A 3 sided shape with all sides congruent
isosceles triangle
A 3 sided shape with exactly 2 congruent sides
scalene triangle
A 3 sided shape with no sides the same length
right triangle
A 3 sided shape with one 90 degree angle
acute triangle
A two-dimensional shape with 3 angles less than 90 degrees
obtuse triangle
A 3 sided shape with 1 angle over 90 degrees
point
Shows the exact placement or location on a grid
straight angle
An angle with a measure of exactly 180 degrees
right angle
An angle that is a measurement of exactly 90 degrees
acute angle
An angle that is more than 0 degrees and less than 90 degrees
obtuse angle
An angle less than 180 degrees but greater than 90 degrees
adjacent
connecting to or next to
cube
A 3 dimensional shape with 6 square faces
dimension
A figure's length, width, and height
x-axis
The horizontal axis on a grid
y-axis
The vertical axis on a grid
coordinate plane
A two dimensional system in which a point is described by its distance from 2 perpendicular lines
coordinate pair
Shows the position on a coordinate grid. Written as (x, y)
rectangular prism
A three dimensional shape with 6 rectangular faces
Area
The number of square units required to cover a surface
Length x Width
Angle
The space formed where two lines or rays meet at a common point
measured in degrees
Ratio
A comparison of two quantities using a :
Base
The side or surface the shape rests on
Vertex
A point where two or more straight lines meet
Kite
a quadrilateral with two pairs of adjacent sides that are equal in length
parallel lines
Lines the same distance apart that will never intersect
Perimeter
The distance around a figure
Polygon
A closed plane figure made up of line segments
Triangle
A polygon with three sides
Isoceles
having only two congruent sides
Scalene
no congruent sides
Congruent
Having the same size and shape
Equilateral
having all sides congruent