In this lesson, we'll learn words we can use to talk about more kinds of polygons.
- pentagon
- hexagon
- septagon
- octagon
- nonagon
- decagon
- simple polygon
- complex polygon
- convex polygon
- concave polygon
- regular polygon
- irregular polygon
Shapes with More than 4 Sides
Polygons with more than four sides also have special names. For example, a polygon with five sides, like the picture below, is called a pentagon.
Below are the names of polygons with between 5 and 10 sides.
| Number of Sides | 5 | 6 | 7 | 8 | 9 | 10 |
| Name | pentagon | hexagon | septagon | octagon | nonagon | decagon |
Categorizing Polygons
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