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Two-Ears Theorem

Except for Triangles, every Simple Polygon has at least two nonoverlapping Ears.

See also Ear, One-Mouth Theorem, Principal Vertex


References

Meisters, G. H. ``Principal Vertices, Exposed Points, and Ears.'' Amer. Math. Monthly 87, 284-285, 1980.

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




© 1996-9 Eric W. Weisstein
1999-05-26