Circles Mid-Point Review

Front

What is the diameter of a circle?

Back

The diameter is a line segment that passes through the center of the circle and touches both edges.

Front

What is the radius of a circle?

Back

The radius is a line segment from the center of the circle to any point on its edge.

Front

What does 'circumference' mean?

Back

Circumference is the distance around a circle.

Front

How do you calculate the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

What is the relationship between diameter and radius?

Back

The diameter is twice the length of the radius (Diameter = 2 × Radius).

Front

If the radius of a circle is 5 ft, what is the diameter?

Back

The diameter is 10 ft.

Front

If the diameter of a circle is 14 ft, what is the radius?

Back

The radius is 7 ft.

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius.

Front

If the radius of a circle is 3 ft, what is the area?

Back

The area is 28.27 ft² (approximately).

Front

What is a chord in a circle?

Back

A chord is a line segment whose endpoints lie on the circle.