Parametric Equations?
x=(a+bcosu)sinv
y=(a+bcosu)cosv
z=bsinu+cv
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If you mean S2O23, it is a mathematical object, that can either be represented in the form of 3D plot or Contour plot.
Oh, dude, you mean like an oval-shaped egg but in 3D? That would be an "ellipsoid." It's like the fancy mathematical term for a squished egg shape. So, next time you're trying to impress your friends with your knowledge of 3D egg shapes, just drop the word "ellipsoid" and watch their minds be blown.
EDGE is a line. ... 2D --------------------------------- 2D: head ~ ellipse. 3D: head ~ elliptoid. Half head ~ hemieliptoid. Ear ~ elliptoid. -------------------------------- All Shapes ~ Continuous -> Equation Simplify to ~ Deiscrete -> matrix Piece each matrix together: face = hemieliptoid + elliptoid
a 3D pentagon
a pyramid is 3d