no shape
a line
a line?
A two-dimensional shape with one curved side and four straight sides can be created, but there is not specific name for such a shape.
A shape with three linear sides and one curved side can be drawn, but such a shape has no specific name.
A shape with one side
hectagon
Balls
circle
One.
its a shape
No shape does. However, a line and/or line segment is "one-sided".