A cuboid has 6 flat faces but no curved surfaces. ..________ ./............../| /_______/.| |..............|.| |..............|./ |_______|/
Cylinder
A prism has no curved surfaces. It has 5 or more flat faces.
When a curved surface is represented on a flat surface, usually either distances or directions must be distorted. Various "projections" exist to minimize these distortions in whatever way is important to the cartographer.
There can be no such shape. If there were a shape with n flat surfaces, then if you sliced off one vertex, you would have a shape with n+1 flat surfaces. So it is always possible to add one more flat surface.
A cuboid has 6 flat faces but no curved surfaces. ..________ ./............../| /_______/.| |..............|.| |..............|./ |_______|/
cylinder
Cylinder
curved
A prism has no curved surfaces. It has 5 or more flat faces.
The shape that has two faces and can roll is a cylinder. A cylinder has two circular faces at either end, and its curved surface allows it to roll smoothly. This shape is commonly seen in everyday objects such as cans, coins, and wheels.
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.
Cylinder
Cylinder
2 flat and 1 curved
a cone.
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.