Cubes.
cube
Noun:
A symmetrical three-dimensional shape, either solid or hollow, contained by six equal squares.
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cubes and rectangular prisms
it can have 12 edges any 3d square can
cylinder
Spheres
According to Euler none; for all 3d shapes: Vertices + Faces = Edges + 2 ⇒ 12 + 8 = 19 + 2 ⇒ 20 = 21 So unless 20 does equal 21, no 3d shape has 8 faces, 19 edges and 12 vertices. Any 3d shape with 8 faces would be an octahedron.