A quadrilateral with one pair of parallel sides is known to as a trapezoid
A quadrilateral with only one pair of parallel sides is a trapezoid.
trapezoids
Any polygon, other than a triangle, can have one pair of parallel sides.
Just the one pair of different lengths
A quadrilateral with one pair of parallel sides is known to as a trapezoid
A quadrilateral with only one pair of parallel sides is a trapezoid.
Both have at least one pair of parallel sides. In a trapezoid the other pair is not whereas in a parallelogram it is.
trapezoids
Any polygon, other than a triangle, can have one pair of parallel sides.
Just the one pair of different lengths
a trapezoid
At least one pair, or one pair? If it is one pair, then it depends if the shape is regular or irregular.
One shape that has 12 edges is a cube. Any cuboid shape in general like a traditional cube or even an oblong can have 12 edges.
sphere
A trapezoid has at least one pair.
square * * * * * A square? It has 4 edges and one face!