6th Gr. Area, Volume, & Surface Area

Variable

is a letter used to represent 6 a number. It's value varies (can have multiple values).

Parallelogram

m is a four-sided figure with two pairs of parallel sides and opposite sides that are equal in length.

Straightedge

is a tool to draw straight lines.

Quadrilateral

a four-sided polygon

Trapezoid

is a quadrilateral with two bases that are parallel to each other. The other two sides of a trapezoid are called the legs of the trapezoid.

Composite figure

is a figure made up of more than one geometric figure.

Volume

is the amount of space occupied by an object. You measure the volume of an object in cubic units.

Geometric solid

is a bounded three-dimensional geometric figure.

Polyhedron

is a three-dimensional solid figure made up of polygons.

Face

is one of the polygons that makes up a polyhedron.

Edge

is the intersection of two faces of a three-dimensional figure.

Vertex

The point where multiple edges meet.

Unit cube

is a cube whose sides are all 1 unit long.

Right rectangular prism

is a polyhedron with three pairs of congruent and parallel rectangular faces.

Cube

is a polyhedron that has congruent squares as faces.

Congruent

Having the same size and shape

Net

is a two-dimensional representation of a three-dimensional geometric figure.

Surface area

of a polyhedron is the total area of all its two-dimensional faces.

Pyramid

is a polyhedron with one base and the same number of triangular faces as there are sides of the base. The vertex of a pyramid is the point at which all the triangular faces intersect.

Slant height

is the distance measured along a triangular face from the vertex of the pyramid to the midpoint of an edge of the base.