Polygons are shapes that are:

- 2-dimensional
- made up of straight lines only

These are polygons:

These are not polygons:

**List of Polygons**

- 3 sides –
**triangle** - 4 sides –
**quadrilateral** - 5 sides –
**pentagon** - 6 sides – hexagon
- 7 sides – heptagon
- 8 sides – octagon
- 10 sides – decagon
- 12 sides – dodecagon