ELLIPTIC PARABOLOID
z/c = x^2/a^2 + y^2/b^2
HYPERBOLIC PARABOLOID
z/c = x^2/a^2 - y^2/b^2 z/c = y^2/b^2 - x^2/a^2
ELLIPSOID
x^2/a^2 + y^2/b^2 + z^2/c^2 = 1
DOUBLE CONE
z^2 = x^2 + y^2
HYPERBOLOID OF ONE SHEET
x^2/a^2 + y^2/b^2 - z^2/c^2 = 1
HYPERBOLOID OF TWO SHEETS
-x^2/a^2 - y^2/b^2 + z^2/c^2 = 1
HYPERBOLA (HORIZONTAL TRANSVERSE)
x^2 - y^2 = 1
HYPERBOLA (VERTICAL TRANSVERSE)
y^2 - x^2 = 1