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Terms in this set (127)
Area
Area is the number of square units enclosed by the two dimensional shape.
Image: Area
Perimeter
Perimeter is the distance around the outside of a 2D shape.
Image: Perimeter
Area vs perimeter
Area is the number of square units enclosed by the 2D shape.
Perimeter is the distance around the outside of a 2D shape.
Image: Area vs perimeter
Trapezoid
Two dimensional shape with four sides and one pair of parallel and congruent sides.
Image: Trapezoid
Irregular Shape
Irregular shapes have sides and angles of any length and size.
Image: Irregular Shape
Circle (Radius, Diameter, Circumference)
Radius is the distance from the center to the edge.

Diameter starts at one side of the circle, goes through the center and ends on the other side.

Circumference is the distance around the edge of the circle.
Image: Circle (Radius, Diameter, Circumference)
Concentric circles
Circles that have their centers at the same point.
Image: Concentric circles
Three Dimensional Shapes or Solids
Three-Dimensional shapes can be made up of flat of curved or flat surfaces
Image: Three Dimensional Shapes or Solids
Polyhedron
A polyhedron is a three-dimensional solid figure in which each side is a flat surface. These flat surfaces are polygons and are joined at their edges. The word polyhedron is derived from the Greek poly (meaning many) and the Indo-European hedron (meaning seat or face).
Image: Polyhedron
Face, Vertex, Edge
Each flat surface is called a FACE.

EDGE is a line segment that is the intersection of two faces.

VERTEX is the point that is the intersection of three or more faces.
Image: Face, Vertex, Edge
Right Rectangular Prism
A solid (3-dimensional) object which has six faces that are rectangles.
The two bases are parallel and congruent. It has the same cross-section along a length, which makes it a prism.
Image: Right Rectangular Prism
Net
A net is a two dimensional figure that can be folded to make a three dimensional object.
Image: Net
Lateral Surface Area of a Rectangular Prism
Lateral surface area (LA) is the sum of the side faces.
Image: Lateral Surface Area of a Rectangular Prism
Total Surface Area of Rectangular Prism
Total SA = LA + Areas of 2 Bases

A right prism has a set of flat surfaces called the FACES.

Total Surface Area (SA) is the sum of all faces.

The two bases (top and bottom faces) are parallel and congruent.
Image: Total Surface Area of Rectangular Prism
Volume of Rectangular Prism
Volume is the number of cubic units to exactly fill a prism.
Image: Volume of Rectangular Prism