Parts of a circle

Front

What is a diameter in relation to a circle?

Back

A diameter is a line segment that passes through the center of the circle and connects two points on the circle. It is also a type of chord.

Front

What is a chord?

Back

A chord is a line segment that joins two points on a curve, specifically within a circle.

Front

What is the distance across a circle through the center called?

Back

The distance across a circle through the center is called the diameter.

Front

If the radius of a circle is 4, what is the diameter?

Back

The diameter is 8, since the diameter is twice the radius (Diameter = 2 * Radius).

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 the circle.

Front

What is the circumference of a circle?

Back

Front

What is an arc in a circle?

Back

An arc is a part of the circumference of a circle.

Front

What is a sector in a circle?

Back

A sector is a region enclosed by two radii and the arc between them.

Front

What is the relationship between radius and diameter?

Back

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

Front

What is the formula to calculate the area of a circle?

Back