a line.
trapezoid
There is no specific name for such a shape.
A parallelogram
There is no such shape.
parallelogram
a line.
parallelogram
Trapezium
trapezoid
There is no specific name for such a shape.
Nonagon
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