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.
No. A parallelogram, for example, is not a regular polygon. Even a rhombus, with parallel sides of equal lengths is not.
A four-sided polygon with two parallel sides is called a trapezoid (US) or trapezium (UK). It requires that the parallel sides are not equal in length, or they would form a parallelogram. A trapezoid's bases are parallel, but the legs are not.trapezoid
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.
quadrilateral
A four-sided polygon with opposite sides parallel and all sides congruent is a square.
A four-sided polygon with opposite sides parallel could be a square, a rectangle, or a rhombus.If it has one pair of opposite, parallel sides, then it is a trapezoid. If it has two pairs of opposite, parallel sides, then it is a parallelogram.
Any even sided irregular polygon can have opposite sides parallel. A parallelogram would be the simplest of these.
A rhombus or a parallelogram
A pallelogram or rhombus
None. (As there are an odd number of sides, each side is opposite a vertex and there are no parallel sides.)
A square or a rhombus
A square is a four-sided polygon with two congruent 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 square or a rectangle
A four-sided shape is a quadrilateral. With only one pair of parallel sides, it would be called a trapezoid (UK trapezium).
A rectangle is a quadrilateral with opposite sides parallel and congruent and four right angles. If all four sides are congruent, it is a square.