A Semi-Sphere :)
The solid that has one flat face, one curved face, one edge, and one vertex is a cone. The flat face is the circular base, the curved face is the conical surface, the edge is the circular boundary where the base meets the curved surface, and the vertex is the pointed tip of the cone.
A solid hemisphere has two surfaces: one curved surface and one flat circular base. The curved surface forms the outer part of the hemisphere, while the flat base is the circular face at the bottom.
A cone has one flat surface, which is its circular base. The curved surface that extends from the base to the apex is not flat. Therefore, in total, a cone has one flat surface.
Just one at the base, the rest is a curved surface
A Cylinder
semi-circle
An empty cone (like an ice-cream cone) doesn't have any flat surfaces. It has two curved surfaces, one outside and one inside. A solid cone has a flat base, and one other curved surface.
One if it is solid, two if it is hollow
a cone.
half circle
A guitar with a flat body instead of a curved one is called a "solid-body guitar."
A cone.
Just one at the base, the rest is a curved surface
An empty cone (like an ice-cream cone) doesn't have any flat surfaces. It has two curved surfaces, one outside and one inside. A solid cone has a flat base, and one other curved surface.
A Cylinder
A cone.
a sphere