This math fractions ClipArt gallery offers 5 illustrations of a four sided polygon broken into fourth slices. This includes images of individual slices, as well as the polygon with missing slices.

1/4 of a 4 sided polygon

2/4 of a 4 sided polygon

3/4 of a 4 sided polygon

4/4 of a 4 sided polygon

4/4 of a 4 sided polygon with one piece detached