rambus
square
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.
Trapezoids make up the set of quadrilaterals with 2 pairs of parallel sides.
It is called a parallelogram.
There are lots of different quadrilaterals that do not have two pairs of parallel sides: a kite, arrowhead, trapezium, and a shape which has no specific name.
rhombus
Most quadrilaterals do not have opposite sides which are equal in length. Sadly, there is no special name for them.
A general quadrilateral has no equal sides, but it also has no specific name. Among quadrilaterals with a name, a trapezium (unless it is isosceles) can have no equal sides.
A rhombus is a type of parallelogram. Parallelograms are types of quadrilaterals. Everything that applies to quadrilaterals and parallelograms apply to rhombuses.Quadrilaterals have four sides and four angles.Parallelograms have at two pairs of opposite sides and opposite angles congruent. (Note: congruent is pretty much "equal", except for geometric figures). Both pairs of opposite sides are also parallel, hence the name "parallelogram".Rhombuses have all sides congruent.
rectangle
rhombus
it is a kite ! it has 2 pairs of equal sides and three obtuse angles by ansu
trapezium