Parts of a Circle Practice

Front

What is the diameter of a circle?

Back

The diameter is a straight line that passes through the center of the circle and connects two points on its circumference. It is twice the length of the radius.

Front

What is the radius of a circle?

Back

The radius is the distance from the center of the circle to any point on its circumference. It is half the length of the diameter.

Front

What is a sector of a circle?

Back

A sector is a portion of a circle enclosed by two radii and the arc between them. It resembles a 'slice' of the circle.

Front

What is a chord in a circle?

Back

A chord is a straight line segment whose endpoints lie on the circumference of the circle. It does not pass through the center.

Front

What is an arc in a circle?

Back

An arc is a part of the circumference of a circle. It is defined by two endpoints on the circle.

Front

What is a central angle in a circle?

Back

A central angle is an angle whose vertex is at the center of the circle and whose sides (radii) extend to the circumference.

Front

What is the formula for the area of a circle?

Back

Front

What is the circumference of a circle?

Back

Front

What is the relationship between the diameter and radius of a circle?

Back

Front

What is the formula for the circumference of a circle?

Back