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Concave Polygon


ConvexPolygon

A concave polygon is a polygon that is not convex.

A simple polygon is concave iff at least one of its internal angles is greater than 180 degrees. An example of a non-simple (self-intersecting) polygon is a star polygon.

A concave polygon must have at least four sides.


See also

Convex Polygon, Polygon, Simple Polygon

Portions of this entry contributed by David Terr

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Cite this as:

Terr, David and Weisstein, Eric W. "Concave Polygon." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ConcavePolygon.html

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