Final answer:
A circle is defined as the set of all points in a plane that are the same distance from a given point called the center.
Step-by-step explanation:
The statement that best defines a circle is:
The set of all points in a plane that are the same distance from a given point called the center.
For example, consider a circle with center point C. Every point on the circle is equidistant from point C. This distance is the radius of the circle.
Learn more about Definition of a circle