Radius and Diameter REVIEW

Front

What is the radius of a circle?

Back

The measurement from the center of a circle to an edge of the circle.

Front

What is a straight line from the center to the circumference of a circle called?

Back

Radius.

Front

What is the diameter of a circle?

Back

A straight line that passes through the center of the circle and touches both edges.

Front

If the radius of a circle is 11 inches, what is the diameter?

Back

22 inches (Diameter = 2 x Radius).

Front

If the diameter of a circle is 32 inches, what is the radius?

Back

16 inches (Radius = Diameter / 2).

Front

What is the relationship between radius and diameter?

Back

Diameter is twice the length of the radius.

Front

What is a chord in a circle?

Back

A line segment with both endpoints on the circle.

Front

What is a tangent in relation to a circle?

Back

A line that touches the circle at exactly one point.

Front

How do you calculate the circumference of a circle?

Back

Circumference = π x Diameter.

Front

What is the formula for the area of a circle?

Back

Area = π x (Radius)^2.