An octagon need not have any sides that are vertical.
it has 5 verticles
according to my subject the answer is five(5) verticles
Polygons of 6 or more sides have more than 5 vertices such as an octagon which has 8 vertices
Two
None.
In 2-dimensions, an octagon. In 3-d it could be a heptagonal pyramid, a quadrilateral prism or quadrilateral antiprism. There are probably a few more shapes.
it has 6
8
1
6.
4