A Polygon is said to be simple (or Jordan) if the only points of the plane belonging to two Edges of are the Vertices of . Such a polygon has a well-defined interior and exterior.

**References**

Toussaint, G. ``Anthropomorphic Polygons.'' *Amer. Math. Monthly* **122**, 31-35, 1991.

© 1996-9

1999-05-26