Cylinders
cylinder
cylinder
There are an infinite number of 3d shapes with more than 20 faces.
A tetrahedron (4 faces) and an icosahedron (20).
A cylinder has two parallel congruent faces and a curved surface.
Cylinders
Cylinder
triangular pyramid and cube.
cone
3d shapes with six faces are called hexahedra.
2 squares & 4 rectangles.
cylinder
There are infinitely many shapes that do.
Hexagonal prism has percandicular faces
Curved and flat faces.
They are straight lines where two plane faces of the shape meet. The definition is sometimes extended to curved lines where curved (3d) faces meet such as at the base of a cone.