An octagon is not classified as having acute or obtuse angles because it is a polygon with eight sides. However, we can examine the interior angles of a regular octagon.
In a regular octagon, each interior angle measures 135 degrees, which is considered an obtuse angle since it is greater than 90 degrees. Therefore, the interior angles of a regular octagon are obtuse.
If you refer to an octagon in general, it can have a combination of acute, obtuse, or right angles depending on the specific shape and arrangement of its angles. However, in the case of a regular octagon, all interior angles are obtuse.