# N

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**network**-
A connection between two or more computers that allows each to transfer data to and from the others.

**nonconvex**-
A state of a polygon in which a line in the plane of the polygon intersects the polygon more than twice.

**normal**-
A three-component plane equation that defines the angular orientation, but not position, of a plane or surface.

**normalize**-
To divide each of the components of a normal by the square root of the sum of their squares. Then, if the normal is thought of as a vector from the origin to the point (nx', ny', nx'), this vector has unit length:

- nx' = nx/factor
- ny' = ny/factor
- nz' = nz/factor

**normal vector**-
See

*normal*. **NURBS**-
Non-Uniform Rational B-Spline. A common way to specify parametric curves and surfaces.

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