A special point which usually has some symmetric placement with respect to points on a curve or in a solid. The center of a circle is equidistant from all points on the circle and is the intersection of any two distinct diameters. The same holds true for the center of a sphere.

CITE THIS AS:

Weisstein, Eric W. "Center." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/Center.html