A trapezoid.
I believe you are looking for the word quadrilateral. http://en.wikipedia.org/wiki/Polygon#Naming_polygons http://en.wikipedia.org/wiki/Quadrilateral
A quadrilateral
regular polygon\
A quadrilateral
A trapezoid.
No.No.No.No.
I believe you are looking for the word quadrilateral. http://en.wikipedia.org/wiki/Polygon#Naming_polygons http://en.wikipedia.org/wiki/Quadrilateral
A quadrilateral
rhombus
regular polygon\
A quadrilateral
A polygon is any geometric 2-D shape. A Quadrilateral is a polygon with four sides.
A regular polygon requires all sides to be the same length; in a rectangle not all four sides are the same length (they form two pairs of sides of equal length) and so it is not a regular polygon.
It is a general polygon. Unlike with triangles, there is no special name for such a shape.
An isosceles trapezoid has 2 sides that are the same length.
A rhombus is a quadrilateral polygon with four sides of all equal length.