A cone fits this description. A hemisphere (dome) would also fit this description.
it if called a edge for a 3D shape
A cone has either one or two surfaces and either one or no edges.
A Cylinder
A cone.
One curved surface (two if it is hollow) and no edges.
it if called a edge for a 3D shape
A cone has either one or two surfaces and either one or no edges.
A Cylinder
A cone.
One curved surface (two if it is hollow) and no edges.
A cone.
Cone
They form a line or edge.
The edge of a shape can be considered a point where two sides meet to either form an angle (inside) or edge (outside).
A cone would fit the given description
Boundary
A cylinder