Question

fill in the blank.
a set of points equidistant from a fixed point is called a(n) ______.

a set of points equidistant from a fixed point is called a(n)

Explanation:

In Geometry (a subfield of Mathematics), the definition of a circle is a set of all points in a plane that are equidistant from a fixed point (the center). This matches the description in the question.

Answer:

circle