A.
A shading method in which a simple grid of lines is used to represent the basic contours of the underlying modelp
B.
A technique in which a two-dimensional profile is duplicated in rotation around an axis, and the duplicates joined up to create a continuous three-dimensional surface
C.
Tracing the path of every ray of light from its source until it either leaves the scene or becomes too weak to have an effect}
D.
The process in which NURBS surfaces are edited.