Skew polygon

In geometry, a skew polygon, saddle polygon, or space polygon, is a polygon whose vertices do not lie in a plane. Skew polygons must have at least 4 vertices.
A regular skew polygon is a skew polygon with equal edge lengths and which is vertex-transitive.
The interior surface (or area) of such a polygon is not uniquely defined, although this can be considered as a minimal surface problem like the form of a soap film inside of a wire frame.
Category:Geometry
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Category:Math dictionary