Take a circle K and a plane P, which is perpendicular to the plane that K lies on.

Now, take a second circle C with the same radius as K. Move C around, keeping its center on circle C and keeping it parallel to plane P. The surface sweeped out is a quartic surface called a Bohemian Dome. The following parametric equations define a Bohemian Dome:

x = a cos u
y = b cos v + a sin u
z = c sin v

where u, v ∈ [0, 2π).

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