A geometric figure is circumscribed about another figure if it touches only the vertices (or other extremities) of the other figure.
Circumscribed
See also
Circumcenter, Circumcircle, Circuminscribed, Circumradius, Circumscribed Triangle, Cyclic Quadrilateral, InscribedExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Circumscribed." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Circumscribed.html