In geometry or in the overall mathematical world of shapes, a five sided polygon is considered to be a pentagon. There is no other name for a five sided polygon.
http://answers.ask.com/Science/Mathematics/what_is...

A polygon with 5 sides is called a Pentagon.
http://wiki.answers.com/Q/What_is_polygon_with_5_s...

A fivesided polygon is called a pentagon. An example would be the shape of home
http://www.chacha.com/question/whatisapolygonw...

Sides Name. n Ngon. 3 Triangle. 4 Quadrilateral. 5 Pentagon. 6 Hexagon. 7 Heptagon. 8 Octagon. 10 Decagon. 12 Dodecagon.
http://answers.yahoo.com/question/index?qid=201202...
