- doubly degenerate conic
- геом.дважды вырожденное коническое сечение; дважды вырожденная кривая второго порядка
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Hyperboloid — Not to be confused with Hyperbolic paraboloid. Hyperboloid of one sheet … Wikipedia
Cone (geometry) — Not to be confused with the conical surface.. A right circular cone and an oblique circular cone A cone is an n dimensional geometric shape that tapers smoothly from a base (usually flat and circular) to a point called the apex or vertex.… … Wikipedia