octagon-2D Octahedron-3D
octagon
No, but an octagon is.
An octagon can be an irregular shape, but a regular octagon has all sides and angles equal.
an octagon is it's own shape with 8 sides
It's a 2D shape.
octagon
octagon-2D Octahedron-3D
Octagon.
if its 2D its a octagon, if its 3D its a octagonal prisim
What is the 3d name for octagon
octagon
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.
A 3d shape with 10 sides is called a decahedron. I have added a link with some pictures of them. As you can see they look very different but all have 10 sides or faces.
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?
No, but an octagon is.
An 8 sided shape is an octagon