This math fractions ClipArt gallery offers 9 illustrations of an eight sided polygon broken into eighth slices. This includes images of individual slices, as well as the polygon with missing slices.
1/8 of a 8 sided polygon
2/8 of a 8 sided polygon
3/8 of a 8 sided polygon
4/8 of a 8 sided polygon
5/8 of a 8 sided polygon
6/8 of a 8 sided polygon
7/8 of a 8 sided polygon
8/8 of a 8 sided polygon
8/8 of a 8 sided polygon with one piece detached