the 3d shape that that has no flat face is the circle
Each flat face of a 3d object is called a face or a polygon!
a 3D shape called a cylinder
a piramid
a cube
No 3D shape with FLAT SIDES has exactly 3 faces. 4 is the minimum.
Curved and flat faces.
Polyhedra (singular = polyhedron).
Sphere
A cuboid
A polyhedron.
it has to be made out of strait lines so no curves and it has to be closed last it has to be flat it cant be 3D