8
Eight
Eight.
8 sides
8 sides
8
A regular octogan has 8 lines of symetry, and a irregular octogan has 2 lines of symetry.
I have no idea about an octogan. An octagon can have none, one, two, up to 8 lines of symmetry.
It has 1,345,890 diagonals
no an octogan has eight sides while a hexagon only has six sides
2d shapes do not have edges or vertices
It can have 0, it can have 8, and some numbers in between.