Circle Review

Front

What is the circumference of a circle?

Back

The circumference is the distance around the circle, also known as the perimeter.

Front

What is the diameter of a circle?

Back

The diameter is the longest chord of a circle, passing through the center and connecting two points on the circle.

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.

Front

What is a chord in a circle?

Back

A chord is a line segment with both endpoints on the circle.

Front

How is the diameter related to the radius?

Back

The diameter is twice the length of the radius.

Front

What is the formula for the circumference of a circle?

Back

The formula is C = 2πr, where C is the circumference and r is the radius.

Front

What is the area of a circle?

Back

The area is the space contained within the circle, calculated using the formula A = πr².

Front

What does π (pi) represent in circles?

Back

Pi (π) is a constant approximately equal to 3.14, representing the ratio of the circumference to the diameter of any circle.

Front

What is the relationship between the radius and the circumference?

Back

The circumference increases as the radius increases; specifically, C = 2πr.

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.