Diamond
A parallelogram.
square
parallelogram
There are quadrilaterals that have no parallel sides. (basically, a quadrilateral is just any enclosed shape with 4 sides) But all quadrilaterals have angles.
a trapeziod
a rectangle
A parallelogram is a quadrilateral with opposite sides parallel and congruent.
A trapezium :)
quadrilateral with 2 parallel sides and four right a ngles = recta ngle
trapezoid
A general quadrilateral.
Yes, it is.