Final answer:
A circle is the set of all points in a plane that are equidistant from a given center point.
Step-by-step explanation:
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. This means that no matter where you pick a point on the circle, its distance to the center will always be the same. For example, if you measure the distance from any point on the edge of a tire to its center, it will be the same as the distance from any other point on the edge of the tire to its center.
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