Surfaces
Regular old boring plane
the simplest surface
Elliptic cylinder
an example of a generalized cylinder
Surface of revolution
these surfaces are made up of circles
traces of the graph of z=x
^{2}
+y
^{2}
courtesy of Professor Jonathan Rogness of the University of Minnesota
Torus knots
Knots such as the trefoil knot can be "fattened up" to make
interesting surfaces. There is a
torus knot web site
at
Wolfram Research, Inc where you can manipulate these knots.