A frustum (unfortunately commonly misspelled "frustrum") is that portion of a solid which lies between two parallel planes cutting the solid. Degenerate cases are obtained for finite solids by cutting with a single plane only.

See also

Conical Frustum, Pyramidal Frustum, Spherical Segment

Explore with Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Frustum." From MathWorld--A Wolfram Web Resource.

Subject classifications