Names of shapes
Area and Perimeter
Circle vocabulary
100

A shape with four right angles and four sides.

What is a rectangle?
100

This quantity is found by multiplying the base and the height of the shape, and then dividing by two.

What is the area of a triangle?

100

The distance from the center of the circle to the outside. 

What is the raius?

200

A shape with four right angles and four congruent sides.

What is a square?

200

This quantity is found by multiplying the base of the quadrilateral by itself. 

What is the area of a square?

200

The longest strait distance across a circle, which goes through the center. 

What is the diameter?

300

All of the points on the shape are the same distance from the center. 

What is a circle?

300

This quantity is found by adding up all the sides. 

What is perimeter?

300

The distance around the circle.

What is circumference?

400

A four sided shape where two sides are parallel. 

What is a trapezoid?

400

This quantity is found by multiplying the base length by 4. 

What is perimeter of a square?

400
A strait line from one point on the circle to another, but does not go through the center.

What is a chord?

500

A twelve sided shape. 

What is a dodecahedron?

500

This quantity is perimeter for a circle. 

What is circumference?

500

An irrational number represented by the Greek letter, 𝛑

What is pi?