-5
Yes, it certainly is!
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.
A pyramid
A 3D L shape, which can be visualized as a three-dimensional figure resembling the letter "L," typically has 8 vertices. This includes the corners of the two perpendicular sections of the shape, along with the vertices that connect these sections in space. The exact number may vary depending on the specific design of the L shape, but in its simplest form, it consists of 8 vertices.
Hexagonal prism
cube
octagon
Yes, it certainly is!
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.
cube
cube
A pyramid
cube
A cube is a 3D shape characterised by six identical square faces and 8 vertices.
Hexagonal prism
It is a cuboid
It is an octahedron that is a 3D shape with 8 faces