
Quadrilaterals, or a four sided shape, are fundamental shapes in geometry. They consist of (from most general to complex):
 Trapezoids  One pair of parallel sides.
 Parallelograms  Two pairs of parallel sides.
 Rectangles  A quadrilateral with four right angles.
 Kites  Two congruent adjacent sides.
 Rhombuses  All sides congruent.
 Squares  All sides equal and all angles 90^{o}
From this diagram, it should be very easy to see how these figures are drawn.
