Triangel
A square is a regular polygon with two sets of parallel sides. A parallelogram is an irregular polygon with one set of parallel sides. A rhombus is an irregular polygon with two sets of parallel sides. A rectangle is an irregular polygon with two sets of parallel sides. *Note - a regular polygon is a shape in which all sides are equal in length and all angles are equal in measurement.
trapazoid
Trapezoids have exactly one set of parallel sides.A square has two sets of parallel sides, so it simply cannot be a trapezoid.Because a square is a regular polygon with 4 equal sides and 4 equal angles whereas a trapezoid is an irregular 4 sided polygon.
A trapezoid.
A polygon with 4 or more sides can meet these requirements.
trapezium
It would be a rectangle.
A trapezoid or, in Britain, a trapezium. Other than in Britain, a trapezium is a quadrilateral with no parallel sides at all.
The set of rectangle includes the set of squares (a special rectangle with all equal sides), and the set of rhombus (a special rectangle with equal non parallel sides).
Any regular polygon with an even number of sides will have opposite sides that are parallel. For quadrilaterals (4-sided shapes), a trapezoid has one set of opposite sides and a parallelogram (rectangle, square, rhombus) has both sets of opposite sides parallel.
A polygon does not have a set number of sides.
A trapezoid (UK trapezium) has D)one set of opposite sides parallel although they are of unequal length. An isosceles trapezoid has two sets of equal angles, at the ends of each of the parallel sides.