Unit 7 geometry vocab

area

The surface included within a closed figure. (Multiply) Area of a rectangle is base x height. Area of a triangle is (b x h) / 2.

perimeter

The distance around the outside of a shape. (Add)

decompose

When a shape is broken apart into smaller shapes

volume

The space that is taken up by a 3-D shape. (Multiply) Volume of a prism is base x height x width

face

The side of a shape

base

The distance of the bottom of a shape

height

The distance from top to bottom of a shape

width

The distance from the front to back of a shape

surface area

The sum of the areas of all faces of a shape

net

A flat plane that can be folded in a 3D shape.

prism

A 3D shape