A tapering quadrilateral, important as a window void in early stone architecture. Examples: Basta, Ayutthaya.

(K) A quadrilateral that has exactly one pair of parallel sides. No two sides need be the same length.

A shape with four sides of which two sides are parallel.

A quadrilateral in which two sides are parallel.

the wrist bone between the trapezium and the capitate bones

a four-sided figure with exactly two parallel sides

a four-sided figure with one pair of parallel opposite sides, called its bases

a four-sided figure with one pair of parallel sides of length a and b

a four-sided region with two opposite sides parallel

a quadrilateral, of non-zero winding, with one pair of opposite-sides parallel

a quadrilateral shape in which none of the sides are parallel

a quadrilateral that has exactly two parallel sides

a quadrilateral that has only one pair of sides that are parallel

a quadrilateral that has only two parallel nonconsecutive sides

a quadrilateral with at least one pair of opposite sides parallel

a quadrilateral with at least one pair of parallel sides

a quadrilateral with exactly one pair of opposite sides parallel

a quadrilateral with one pair of sides parallel to each other

a quadrilateral with two opposite sides parallel but not equal

A trapezoid is any four-sided figure that has two sides that are parallel.

Greek trapezion = a trapezium - a quadrilateral with 2 sides parallel, and eidos = shape or form, hence resembling a trapezium.

Gr. trapezodes, from trapezoin, a table or counter, eidos, resemblance. Resembling a trapezium. The trapezoid body of the pons.

A quadrilateral such that at least one set of opposite sides are parallel.

a four-sided plane closed figure with only one pair of parallel sides, called bases.

a quadrilateral with exactly one pair of parallel sides

A quadrilateral with exactly two parallel sides.

quadrilateral possessing, at least, two parallel sides (as depicted in the illustration, shown at right)

A trapezoid is a quadrileteral (four-sided) geometric figure having two parallel sides.

A quadrilateral with one pair of parallel sides and one pair of sides that are not parallel.

A trapezoid (in North America) or trapezium (in Britain and elsewhere) is a quadrilateral two of whose sides are parallel to each other. Some authors define it as a quadrilateral having exactly one pair of parallel sides, so as to exclude parallelograms.