an irregular polygon.
http://wiki.answers.com/Q/What_is_a_polygon_with_s...

Congruent Polygon is a polygon with congruent sides and angles.
http://www.chacha.com/question/whatisapolygonw...

A REGULAR polygon is equilateral and equiangular. http://en.wikipedia.org/wiki/Regular_pol….
http://answers.yahoo.com/question/index?qid=201201...

1. Position the center circle at the bottom of the protractor on one of the four vertices. A vertex  the singular for vertices  is the point which two lines converge. 2. Adjust
http://www.ehow.com/how_8725649_measureanglesfou...
