Select the correct answer.

Which statement best defines a circle?

A. The set of all points that are the same distance from a given point called the center
B. The set of all points in a plane that are the same distance from a given point called the center
C. The set of all points in a plane that are the same distance from each other surrounding a given point
D. Points in a plane that surround a given point called the center

A circle is the set of all points that are the same distance from a given point called the center. This means that every point on the circle is equidistant from the center.

For example, the equation x² + y² = r² represents a circle of radius r, where each point (x, y) is at a distance of r from the origin.

The circumference of a circle can be calculated using the formula C = 2πr, where r is the radius of the circle.

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