A 3-dimensional shape with eight sides is an octahedron.
If you would refer to a 3-dimensional octagon, just call it that, people will understand what you mean.
Or maybe you mean an octagonal prism. That's an octagon, except it is extended into the third dimension by stretching it, so it has an octagonal base but the other sides are triangles all connecting at one point above the octagon.
octagon
About 26 sides, and 24 corners.
An eight sided shape is called an 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.
An octagon. Or more specifically, an irregular octagon.
What is the 3d name for octagon
No, it is not.
It's a 2D shape.
octagon
octagon-2D Octahedron-3D
Octagon.
well if you take octagon (8 sides) , in 3d shapes octagon is probably called octagonal prism. and the sides are actually called faces. AND a 7 sided shape , a heptagon, is called heptagonal prism
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.
About 26 sides, and 24 corners.
if its 2D its a octagon, if its 3D its a octagonal prisim
Simply that: "irregular octagon".
octagon