Octagonal prism?
Adding to what Kittenono said, an octagon is a two dimensional shape which only has length and width. A polyhedron is 3 dimensional which has length, width and height.
An octagon is a 2 dimensional object, not a 3 dimensional object. As such, it has 1 face, 8 corners, and 8 angles.
An octagon is a two-dimensional shape.
If it's a polygon (2 dimensional) then an octagon. If it's a polyhedron (3 dimensional) then a rectangular prism (or a cube).
A three-dimensional octagon is commonly referred to as an "octagonal prism." This geometric shape consists of two parallel octagonal bases connected by rectangular faces. The octagonal prism retains the properties of an octagon while extending into the third dimension.
If its 2-dimensional then its an octagon, if it is 3-dimensional then it is called an octahedron.
An octagon is 2-dimensional, an octahedron is 3-dimensional.
For a plain 2-dimensional figure it is an OCTAGON. For a 3-dimensional object it is an OCTAHEDRON.
the 3 dimensional shape is a octagon, because their are 8 sides.
Adding to what Kittenono said, an octagon is a two dimensional shape which only has length and width. A polyhedron is 3 dimensional which has length, width and height.
An octagon is a 2 dimensional object, not a 3 dimensional object. As such, it has 1 face, 8 corners, and 8 angles.
A 2-Dimensional shape with 8 sides is called an Octagon.
it's still 8
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.
A 2-Dimensional shape with 8 sides is called an Octagon.
An octagon pyramid is more properly called an octagon-based pyramid. It is a 3-dimensional object whose base is an octagon. Attached to each side of the octagon are triangles whose bases are exactly the same lengths as the corresponding sides of the octagon. The "free" vertices of these triangles meet at a point, the apex, in a plane above the base.
it's 2 dimensional