1. Polygons

2. Polygon: a two dimensional shape with straight sides.

3. Triangle: a polygon with three sides

4. Pentagon: a polygon with five sides

5. Hexagon: a polygon with six sides

6. Heptagon: a polygon with seven sides

7. Octagon: a polygon with eight sides

8. Nonagon: a polygon with nine sides

9. Decagon: a polygon with ten sides

10. Works Cited http://www.google.com/imgres?q=stop+sign&hl=en&biw=1366&bih=615&gbv=2&tbm=isc h&tbnid=0QBv5PRtY7IoOM:&imgrefurl=http://en.wikipedia.org/wiki/File:UK_Stop_sign.gif& docid=HA0s2vwRz6oCbM&imgurl=http://upload.wikimedia.org/wikipedia/commons/e/e1/U K_Stop_sign.gif&w=400&h=400&ei=cYReT5ipNejz0gHG1JWrBw&zoom=1 http://www.mathleague.com/help/geometry/polygons.htm