corn
retangle
Sphere ( 0 faces , 0 edges , 0 vertices )
There is no 3d shape made up of octagons. An octahedron can be one of several different shapes - but without ANY octagonal faces. For example, A hexagonal pyramid (8 faces, 18 edges, 12 vertices) A heptagonal pyramid (8 faces, 14 edges, 8 vertices) A quadrilateral dipyramid (8 faces, 12 edges, 6 vertices)
a square
corn
A hexagonal based prism.
# of faces + # of edges + # of vertecies + 2
A sphere!
retangle
L-Shaped Prism & Hexagonal Pyramid
It has 12 edges and 6 faces
Sphere
a cube
That 3D shape is called triangular pyramid.
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.
Sphere ( 0 faces , 0 edges , 0 vertices )