Normal Line

A line along a normal vector (i.e., perpendicular to some tangent line).

If K subset R^d is a centrosymmetric set which has a twice differentiable boundary, then there are 2d+2 normals through the center (Croft et al. 1991, p. 15).

See also

Double Normal, Normal Vector, Tangent Line

Explore with Wolfram|Alpha


Croft, H. T.; Falconer, K. J.; and Guy, R. K. Unsolved Problems in Geometry. New York: Springer-Verlag, 1991.

Referenced on Wolfram|Alpha

Normal Line

Cite this as:

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

Subject classifications