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Trapezoids make up the set of quadrilaterals with 2 pairs of parallel sides.
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∙ 14y agoThe quadrilateral with two pairs of parallel sides
rhombus
rhombus
In North American usage, a trapezoid is a four-sided figure with two parallel sides. Outside of North America, the same figure is called a trapezium. In general usage, the name is applied only to figures that have exactly two parallel sides. Figures that have two pairs of parallel sides are called by their more-specific name, e.g. parallelogram, rectangle, etc. depending on their angles and side lengths.
There are several types of quadrilaterals that are not parallelograms or trapezoids (even assuming that you count rectangles, rhombi, and squares as parallelograms). Several types of these other parallelograms are:KITES: Kites are quadrilaterals that have two pairs of sides with equal lengths, but the sides with equal length are adjacent to each other as opposed to being parallel to each other. (For clarity, side A = side B and side C = side D, as opposed to a parallelogram where side A = side C and side B = side D.) Additionally, the angle between the non-equal sides is an obtuse or convex acute angle.DARTS: Darts are quadrilaterals that have two pairs of sides with equal lengths, but the sides with equal length are adjacent to each other as opposed to being parallel to each other. (For clarity, side A = side B and side C = side D, as opposed to a parallelogram where side A = side C and side B = side D.) Additionally, the angle between the non-equal sides is a concave acute angle. Fellow Expert Anand Mehta calls this type of shape an "arrowhead".There are other esoteric quadrilaterals like antiparallelograms, Watt quadrilaterals, and equilic quadrilaterals.However, the general catch-all term for any quadrilateral that is not a kite, dart, parallelogram, or trapezoid is an IRREGULAR QUADRILATERAL.
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.
The quadrilateral with two pairs of parallel sides
Parallelogram -- 2 pairs of parallel sides Trapezoid -- exactly 1 pair of parallel sides Rhombus -- 4 congruent sides Rectangle -- 4 angles congruent Square -- four angles and sides congruent
Parallelogram -- 2 pairs of parallel sides Trapezoid -- exactly 1 pair of parallel sides Rhombus -- 4 congruent sides Rectangle -- 4 angles congruent Square -- four angles and sides congruent
It is a shape which has two pairs of PARALLEL sides. Parallel sides - parallelogram. Get it?
rhombus
rambus square
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.
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.
rhombus
parallelogram