Cone
A face.
A sphere.
Yes, a cylinder has both curved and flat surface. Considering a solid cylinder standing on its end, the circular base and the circular top are flat surfaces. The surface connecting the top and bottom is curved.
The flat surface that goes on and on in all directions has no boundaries. This flat surface is called infinite surface. Accordingly, the answer is that the flat surface that goes on and on in all directions is called an infinite surface.
A a solid figure on a flat surface is a plane figure (I do believe)
The flat surface of a solid figure is called a face. For example, a rectangular prism has 6 flat surfaces and therefore 6 faces.
the flat surfaces of a solid figure are the
The crust is the solid surface of the Earth.
According to my son's math homework a flat surface on a solid is called a face
A face is the flat surface on a solid figure. For example, a triangular prism has five flat surfaces and therefore five faces.
It is a cylinder
Cone
A face.
A face
A face is a flat surface. The only solid with no flat surfaces is a sphere.
Base.