A rectangle or a square are sets of quadrilaterals with two pairs of right angles. They each have two pairs of right angles and two sets of equal sides.
I have a quad
square
There is no name for such a figure. Quadrilaterals such as a trapezium or kite or even one with no equal sides can have a right angle.
Rhombushttp://www.mathwarehouse.com/geometry/quadrilaterals/parallelograms/images/rhombus/rhombus-diagram.jpg
It's a rectangle. A rectangle has four right angles, but only two pairs of equal sides.
Rectangles have 2 pairs of right angles.
rectangles
square
A square and a rectangle
I have a quad
Square and rectangle
All quadrilaterals have two pairs of adjacent (ie next to one another) sides. Diagonals intersect at right angles suggest a kite (or square).
square
rhombus
Trapezoids make up the set of quadrilaterals with 2 pairs of parallel sides.
There is no name for such a figure. Quadrilaterals such as a trapezium or kite or even one with no equal sides can have a right angle.
Rhombushttp://www.mathwarehouse.com/geometry/quadrilaterals/parallelograms/images/rhombus/rhombus-diagram.jpg