Respuesta :

Answer:

The correct answer is:

Plane.

Step-by-step explanation: There are three terms generally considered to be undefined in geometry:  point, line and plane.

A circle is the set of all points in a plane the same distance from a given point called the center.  The only of our options that is used in this definition is

Answer:

a plane

Step-by-step explanation:

The definition of a circle uses the undefined term plane.