Question

what is a circle
A circle is a collection of all points in a plane which are at a constant distance fixed point​

Answer 1

A circle is a collection of all points in a plane which are at a constant distance fixed point

Answer 2

Definition: A circle is the set of all points in a plane that are equidistant from a given point called the center of the circle. We use the symbol ⊙ to represent a circle. The a line segment from the center of the circle to any point on the circle is a radius of the circle.