I believe that is an elipse.But don't bet on it.
A shape with 1 vertex, 1 edge, 1 flat face, and 1 curved face is a cone. The vertex is the tip of the cone, the edge is the circular base where the flat face meets the curved surface, and the flat face is the circular base itself. The curved face extends from the base to the vertex.
perabale
Cone
A cone.
A sphere intersected by a plane, which could be a hemisphere. Alternatively, a cone, or a paraboloid.
A shape with 1 vertex, 1 edge, 1 flat face, and 1 curved face is a cone. The vertex is the tip of the cone, the edge is the circular base where the flat face meets the curved surface, and the flat face is the circular base itself. The curved face extends from the base to the vertex.
A cone. It has a circle for the base, and a curved face tapering to a point.
perabale
sphere
hemisphere
A sphere sliced by a plane; or a cone.
A cone?
Its an Cylinder
Semi Circle
fwf
Cone
A cone would fit the given description