A sphere!
# of faces + # of edges + # of vertecies + 2
retangle
It has 12 edges and 6 faces
Sphere
a cube
Octagon.
A tissue box is typically in the shape of a rectangular prism, which is a three-dimensional shape with six faces, all of which are rectangles. The base and top faces of the tissue box are congruent and parallel, as are the side faces. The edges where the faces meet are all right angles.
That 3D shape is called triangular pyramid.
Sphere ( 0 faces , 0 edges , 0 vertices )
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.
There is no such 3-d shape if it also has flat faces.
a cube or cuboid