triangle
Hexagonal prism
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.
it can have 12 edges any 3d square can
A hexagonal based prism.
triangle
A cube
It has 12 edges and 6 faces
a cube
A cube or a cuboid could have 12 edges, 8 vertices, and 6 faces.
An isosahedrons has 12 edges many. A cube is one example.
a cube or cuboid
A hexagonal prism.
Hexagonal prism
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 3D shape that has 6 edges is called a hexagonal prism.
a square