1
A polygon with four sides
Quadrilateral
A polygon with six sides
Hexagon
A polygon with eight sides
Octagon
An angle that forms a square corner (90 degrees)
Right angle
The number of unit cubes that fit inside an object (V= length x width x height)
volume
A polygon with five sides
Pentagon
A part of a line that has one endpoint
Ray
Part of a line that has two endpoints
Segment
Figures that are the same shape
Similar figures
The number of unit squares that cover a figure (A= length x width)
Area
A closed figure made up of line segments with three or more sides
Polygon
A four sided plane figure with opposite sides parallel
Parallelogram
An equilateral parallelogram
Rhombus
A figure formed by two rays with the same endpoint
angle
Figures that are the same size and shape
Congruent figures
The point at the corner of an angle, plane figure or solid figure.
vertex
The distance across a circle through its center
Diameter
A plane figure that goes on and on in both directions
Line
Lines in a plane that cross at a point
Intersecting lines
Two lines that cross to form right angles
Perpendicular
A line along which you could fold a figure so that both sides match
Line of symmetry
Lines in a plane that do not cross
Parallel lines
The distance around a figure. The sum of the lengths of the sides
Perimeter
Figures that like on a flat or level surface
Plane figures
What is the area of a square with a length of 5cm? What is the perimeter?
A=25cm2
P=20cm