Rectangle
A rectangle is a quadrilateral with four right angles.
$ 2.99 
Specifications
- A parallelogram with at least one right angle
 - A parallelogram with diagonals of equal length
 - A parallelogram ABCD where triangles ABD and DCA are congruent
 - An equiangular quadrilateral
 - A quadrilateral with four right angles
 - A quadrilateral where the two diagonals are equal in length and bisect each other
 
Facts
Perimeter
Area
Comments