A canonical brick is a cuboid.
Canonical Brick
See also
Brick, CuboidExplore with Wolfram|Alpha
References
Gardner, M. "Mathematical Games: In Which a Mathematical Aesthetic is Applied to Modern Minimal Art." Sci. Amer. 239, 22-32, Nov. 1978.Referenced on Wolfram|Alpha
Canonical BrickCite this as:
Weisstein, Eric W. "Canonical Brick." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CanonicalBrick.html