The term used to describe the shape created by the points at a constant distance from a central point is?

The term that describes the shape created by points at a constant distance from a central point is indeed a circle. A circle is defined mathematically as the set of all points in a plane that are equidistant from a fixed point, known as the center. This constant distance is known as the radius of the circle.

For clarity, while a line can extend infinitely in both directions and is defined by two endpoints or can represent linear relations, it does not encompass a shape defined by distance from a center. A polygon consists of straight edges and vertices and does not represent the concept of a radius from a central point; it requires a minimum of three sides. An ellipse, on the other hand, is defined by two focal points, and while it can appear similar to a circle, it does not maintain a constant distance from a central point as defined for circles. Thus, the definition of a circle aligns perfectly with the question's criteria.