Let be a regular surface and a unit tangent vector to , and let be the plane determined by and the normal to the surface . Then the normal section of is defined as the intersection of and .
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ReferencesGray, A. Modern Differential Geometry of Curves and Surfaces with Mathematica, 2nd ed. Boca Raton, FL: CRC Press, p. 365, 1997.
Referenced on Wolfram|AlphaNormal Section
Cite this as:
Weisstein, Eric W. "Normal Section." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/NormalSection.html