| Name | Name:Nonagon | Name:Dodecagon |
| Sides | Sides:9 | Sides:12 |
| Interior Angle | Interior Angle:140.00 | Interior Angle:150.00 |
| Sum of Interior Angles | Sum of Interior Angles:1260 | Sum of Interior Angles:1800 |
| Description | Description:A polygon with 9 sides is called a nonagon (or an enneagon) | Description:A polygon with 12 sides is called a dodecagon |
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