Polygon density
Encyclopedia
Geometry
Geometry arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers ....
, the density of a polygon is the number of times that the polygonal boundary winds around its center; it is the polygonal form of winding number
Winding number
In mathematics, the winding number of a closed curve in the plane around a given point is an integer representing the total number of times that curve travels counterclockwise around the point...
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Regular star polygons
For a regular star polygon {p/q}, the density is q.It can be visually determined by counting the minimum number of edge crossings of a ray from the center to infinity.