A geometric figure is inscribed in another figure if it touches only the sides (or interior) of the other figure.
Inscribed
See also
Circumscribed, Incenter, Incircle, Inradius, Inscribed Angle, Inscribed Triangle, Tangential QuadrilateralExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Inscribed." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Inscribed.html