A triangular prism.
Sphere
i think it might be a circle but im not sure
Not too sure but you may be thinking of a cube which has 6 same flat faces, 12 edges and 8 vertices
retangle
pyramid
octagon
Sphere ( 0 faces , 0 edges , 0 vertices )
That 3D shape is called triangular pyramid.
Yes, the Platonic solids (excluding the sphere which does not have vertices).
A cube. Except that the word is vertices, not vertixes.
A pentagonal prism would seem to fit the given description.
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.