a line.
trapezoid
A shape with 1 pair of parallel sides is called a trapezoid. Just in case you mean 2 PAIRS of parallel sides, that is a parallelogram.
There is no specific name for such a shape.
A parallelogram
There is no such shape.
Trapezium
trapezoid
parallelogram
A shape with 1 pair of parallel sides is called a trapezoid. Just in case you mean 2 PAIRS of parallel sides, that is a parallelogram.
Nonagon
There is no specific name for such a shape.
A parallelogram
A quadrilateral is a shape with four straight sides. There are no curved sides in a quadrilateral.
There is no such shape.
An octagon.
Hexagon
yes it is impossible to have a shape with 2 sides