Geometry Vocabulary

Front

The distance around a two-dimensional shape

Back

perimeter

Front

The perimeter of a circle

Back

circumference

Front

The size of a surface or the amount of space inside a two-dimensional object.

Back

area

Front

The bottom line of a shape.

Back

base

Front

The distance from top to bottom. Or at right angles from any base to the furthest corner.

Back

height

Front

The distance from one point on a circle through the center to another point on the circle.

Back

diameter

Front

The distance from the center to any point on the circle.

Back

radius

Front

Congruent sides...

Back

are equal in length