A sphere has one surface that's also curved and has no base.
A cone.
One if it is solid, two if it is hollow
A cone has two faces: one circular base and one curved surface. It has one edge, which is the intersection of the curved surface and the base. A cone has two vertices: one at the apex (top point) and one at the center of the circular base.
A curved surface is like imagining a sheet of paper that is bent or a flag waving in the wind. A curved edge is like an elastic stick bent in one(C curve) or more points(S curve). The curved surface beeing 3 dimensional(3D) and the curved edge 2 dimensional(2D) unlike the simple surface and edge which are 2D respectively 1D.
Circle
A paraboloid.
It has just the one curved surface area and and its base
A cone.
A cone.
A cone. A hemisphere.
cone
Just one at the base, the rest is a curved surface
A paraboloid.
a sphere
A cone.
The shape of the face on a cone is a circular base at the bottom and a curved surface that narrows smoothly to a point called the apex. This curved surface is referred to as the lateral face of the cone. Overall, a cone has one circular face (the base) and one curved surface.
A hemisphere has two surfaces: one curved surface and one flat circular base. The curved surface is the rounded part of the hemisphere, while the flat base is the circular face that lies on the ground or surface.