A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex.
A cone is formed by a set of line segments, half-lines, or lines connecting a common point, the apex, to all of the points on a base that is in a plane that does not contain the apex. Depending on the author, the base may be restricted to be a circle, any one-dimensional quadratic form in the plane, any closed one-dimensional figure, or any of the above plus all the enclosed points. If the enclosed points are included in the base, the cone is a solid object; otherwise it is a two-dimensional object in three-dimensional space. In the case of a solid object, the boundary formed by these lines or partial lines is called the lateral surface; if the lateral surface is unbounded, it is a conical surface. Wikipedia, Cone
Russell
"For many years the necessity for a zero in a quantitative universe has been considered as necessary as a fulcrum of non-motion has been necessary for the expression of motion. The apex of the universal cone is as far as one can go in that direction, but whatever of infinite extension there is in this universe is in the direction of its base." [Atomic Suicide, page 250-251]
"MASS IS ACCUMULATED AROUND A VORTEX. A VORTEX IS FORMED BY THE CONTRACTION OF THE AXES OF TWO OPPOSING CONES OF ENERGY. THE GREATER THE CONTRACTION THE GREATER THE ACCELERATION OF MOTION WITHIN THE VORTEX." [Walter Russell, The Universal One, page 153]
See Also
center of cone bases
Figure 3.16 - Idea Preceeds Manifestation in Material Form using Cubes and Cones
four pairs of cones
Vortex