plane curve formed by the intersection of a plane and a circular cone. The angle at which the plane cuts the cone determines whether the curve is a circle, ellipse, parabola, or hyperbola.
A plane curve obtained by cutting a cone with a plane. Depending upon the angle of the cone, the result is a circle, an ellipse, a parabola or a hyperbola.
(geometry) a curve generated by the intersection of a plane and a circular cone