A tri-axial ellipsoid\(\frac{x^2}{a^2}+\frac{y^2}{b^2}+\frac{z^2}{c^2}=1\) Real plane intersections are the ellipses and the circles. |

An ellipsoid of revolution\(\frac{x^2}{a^2}+\frac{y^2}{a^2}+\frac{z^2}{c^2}=1\) Real plane intersections are the ellipses and the circles. |
\(a > c\) an oblate ellipsoid obtained by rotating an ellipse about its minor axis |
\(a < c\) an prolate ellipsoid obtained by rotating an ellipse about its major axis |

a sphere\(x^2+y^2+z^2=a^2\) Real plane intersection is a circle. |

Created by Sonja Gorjanc, translated by Helena Halas and Iva Kodrnja - 3DGeomTeh - Developing project of the University of Zagreb