Polygon Calculator
Calculate the various properties of Area of Polygon for given values.

Polygons Type  Definition  Shape 
Regular polygons  The polygon having all sides and interior angles of the same size.  
Irregular polygons  Every side and angle may be of different size.  
Convex polygons  Every interior angles are < 180° and every vertices 'point outwards' away from the interior. The regular polygons are always convex.  
Concave polygons  One or more interior angles > 180° and some vertices push 'inwards' towards the interior of the polygon.  
Crossed polygons  The The polygon where any or more sides are crossing back over another side means forming multiple smaller polygons. 