Given a set 
of points in the plane, an enclosing circle is a circle for which all points 
lie in its interior.
Enclosing Circle
See also
Circumcircle, Minimal Enclosing CircleExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Enclosing Circle." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/EnclosingCircle.html