The description given fits that of a cone
you call it a edge
sphere
A sphere !
A cone has only one edge simply because it only has one face. Although one face may have several edges, a circle is a closed figure with only one vertice, resulting in one edge. The rest of the shape is 3-D, but with only one face, there is an infinite amount of points on a cone. The cone joins on another vertice, but since the face is a circle, there is still only one actual edge. Thus, there is only one edge on a cone because there is a single, circular face.
It sounds like the shape of a sphere
A circle?
An edge.
How about a sphere as an example that fits the given description
Well it has one edge, one face, one base(the face that the shape sits on), and one vertice.
The description given fits that of a cone
you call it a edge
sphere
A sphere !
A cone has only one edge simply because it only has one face. Although one face may have several edges, a circle is a closed figure with only one vertice, resulting in one edge. The rest of the shape is 3-D, but with only one face, there is an infinite amount of points on a cone. The cone joins on another vertice, but since the face is a circle, there is still only one actual edge. Thus, there is only one edge on a cone because there is a single, circular face.
Possibly a face - or an edge. It would help if the question was properly phrased.
An ellipse.