Circles!

Front

What is the definition of radius?

Back

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

Front

What is the distance from the center to any point on the circle called?

Back

Radius.

Front

What is the diameter of a circle?

Back

The distance across the circle through the center.

Front

Which segment is the diameter in a circle?

Back

The segment that passes through the center and connects two points on the circle.

Front

What is the definition of diameter?

Back

The distance across the circle through the center.

Front

If the radius of a circle is 2 ft, what is the diameter?

Back

4 ft.

Front

What is the relationship between radius and diameter?

Back

The diameter is twice the length of the radius.

Front

What is π (pi) in relation to circles?

Back

A constant approximately equal to 3.14, used to calculate the circumference and area of a circle.

Front

How do you calculate the circumference of a circle?

Back

Circumference = 2 × π × radius.

Front

How do you calculate the area of a circle?

Back

Area = π × radius².