rectange ans square
A trapezoid is a four-sided figure (or "quadrilateral") with only one pair of parallel sides.
Only one quadrilateral has only two parallel sides: the trapezium.
A four-sided shape is a quadrilateral. With only one pair of parallel sides, it would be called a trapezoid (UK trapezium).
A trapezoid or trapezium. UK definition verses American. One has 2 sides parallel, one has no sides parallel. Take your pick.
It is a closed four-sided shape with one pair of parallel sides.
square
An irregular hexagon.
A trapezoid is a 4 sided shape that has one pair of parallel sides of different lenghts
Not all four-sided shapes have one pair of parallel sides. For example, a rectangle and a trapezoid can have one pair of parallel sides, but a general quadrilateral does not necessarily have any parallel sides. Shapes like rhombuses and squares have two pairs of parallel sides, while irregular quadrilaterals may have none. Thus, the presence of parallel sides depends on the specific type of four-sided shape.
The name of the four-sided shape that has only one pair of parallel sides is known as a trapezoid. The other two sides are not parallel to each other. There are many other shapes with more than four sides that have one pair of parallel sides but these typically don't have special names. So assuming the question is only referring to four-sided figures, the answer is a trapezoid.
A quadrilateral (four-sided shape) is a parallelogram if it has two sets of parallel sides. If it has only one set, it is a trapezoid, also known as a trapezium.
A trapezium (trapezoid).