| Name | Name:Icosagon | Name:Heptadecagon |
| Sides | Sides:20 | Sides:17 |
| Interior Angle | Interior Angle:162.00 | Interior Angle:158.00 |
| Sum of Interior Angles | Sum of Interior Angles:3240 | Sum of Interior Angles:2700 |
| Description | Description:A polygon with 20 sides is called an icosagon | Description:A polygon with 17 sides is called a heptadecagon |
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