trapizoid
The shape you are describing is a rectangle. A rectangle is a type of quadrilateral that has two pairs of parallel sides, opposite sides that are equal in length, and all interior angles measuring 90 degrees. If all four sides of the rectangle are also equal in length, it is specifically known as a square.
square
trapizoid
squarerectangletrapezoidrhombus
Most irregular polygons.
A parallelogram.
Rectangle
That shape would be a trapezoid.
Pentagon
A square
A rhombus has 4 sides of equal length, opposing parallel sides, and no right angles
A rhombus.