Families of surfaces which are mutually orthogonal. Up to three families of surfaces may be orthogonal in three dimensions. The simplest example of three orthogonal surfaces in three dimensions are orthogonal planes, but three confocal conic surfaces are also mutually orthogonal.

# Orthogonal Surfaces

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## References

Wells, D.*The Penguin Dictionary of Curious and Interesting Geometry.*London: Penguin, p. 166, 1991.

## Referenced on Wolfram|Alpha

Orthogonal Surfaces## Cite this as:

Weisstein, Eric W. "Orthogonal Surfaces."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/OrthogonalSurfaces.html