User:TheBee1024/sandbox

In geometry a null polygon or 0-gon is a polygon with no edge or vertex. It has Schläfli symbol {1}. Since a null polygon has no sides and vertex, every null polygon is regular by definition.

In Euclidean geometry
In Euclidean geometry a null polygon is a degenerate polygon because it cannot be represented in a figure, unlike any other polygons. Most definitions of a polygon in Euclidean geometry do not admit the null polygon.

In spherical geometry
In spherical geometry, a null polygon can be constructed as a great circle with no vertices, and it is self-dual.