Two straight lines connected by one curve is the basic horse-shoe shape.
A curved shape does not have any straight lines. In a circle the line curves continually, meaning that the circle is a curved shape.
distortion of a size, shape, distance, or area occurs.
a polygon!
Polygon: A closed shape bounded by straight lines.
It is the total length of its boundary. There is no need for the boundary to be made up of straight lines or even smooth curves. However, fractals do cause problems.
A shape with 4 straight lines in which there are 2 parallel and 2 unparallel lines is called a Trapezium.
If the shape has three straight lines and no other lines then it has to be a triangle
A polygon.
A shape made up of line segments is a shape with straight lines, or a polygon. for example, a square has straight lines, or is made up of line segments. A circle is not in that category because it has no straight lines, they are curved.
A hexagon
Not really, but if you have many lines it can look like a curved shape.
There is no kind of shape that has a straight line or curved line a kind of element of the following question is "space"...hope this helps