A cone
cylinder
circle
A Cone.
A face is any one of the 2-dimensional plane boundaries or surfaces of a solid object. Sometimes the term is also used for curved surfaces.
A cone
cylinder
circle
A cylinder
a plane
a line
Venus and Mercury also have solid surfaces.
A bubble because you have the inside and outside, it may not be solid but it may be solid information I dont know. Patrick Ward http://www.aquashield.us.com
A Cone.
A prism
When two solid objects are rubbed together, kinetic friction occurs. This type of friction opposes the direction of motion between the surfaces of the objects and is caused by the microscopic interactions between the surfaces. The rougher the surfaces and the greater the force pressing the surfaces together, the stronger the kinetic friction.
A face is any one of the 2-dimensional plane boundaries or surfaces of a solid object. Sometimes the term is also used for curved surfaces.