They are quadrilaterals which have two pairs of parallel sides.
A trapezoid is different from other quadrilaterals that have 2 pairs of parallel sides in that a trapezoid has only 1 pair of parallel sides of different lengths.
Quadrilaterals. Parallelograms have two pairs of parallel sides.
Trapezoids. All other quadrilaterals either have two pairs of parallel sides or none.
Rectangle? :P
They are quadrilaterals which have two pairs of parallel sides.
A parallelogram has two pairs of sides which are parallel.
The four quadrilaterals that are symmetrical and have two pairs of parallel sides are:SquareRectangleRhombusParallelogram
Trapezoids make up the set of quadrilaterals with 2 pairs of parallel sides.
A trapezoid is different from other quadrilaterals that have 2 pairs of parallel sides in that a trapezoid has only 1 pair of parallel sides of different lengths.
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.
Two different quadrilaterals have two pairs of parallel sides and have all their angles congruent. They are the square and the rectangle.
Quadrilaterals. Parallelograms have two pairs of parallel sides.
parallelogram
Quadrilaterals with two pairs of parallel sides: Rhombus Parallelogram Rectangle Square
A trapezoid has one pair of parallel sides. All other quadrilaterals have no parallel sides or two pairs of parallel sides.
Trapezoids. All other quadrilaterals either have two pairs of parallel sides or none.