The question is ambiguous. An octagon is a 2-dimensional shape with 8 edges and 8 vertices. Does a 3-D octagonal shape mean one with 8 edges or 8 faces or vertices, or faces which are 2d octagons?
Octagon. * * * * * An octagon is 2-dimensional. The regular 3-d shape (all faces the same) is the octahedron, but a hexagonal prism also has 8 faces.
octagon
A hexahedron is the name for a 6 sided 3D shape.
An octagon
octagon
What is the 3d name for octagon
No, it is not.
It's a 2D shape.
Octagon. * * * * * An octagon is 2-dimensional. The regular 3-d shape (all faces the same) is the octahedron, but a hexagonal prism also has 8 faces.
Octagon.
octagon
octagon-2D Octahedron-3D
if its 2D its a octagon, if its 3D its a octagonal prisim
octagon
octagon
octagon
A hexahedron is the name for a 6 sided 3D shape.