3 sides- Triangle
4 sides- Square/Rectangle/Quadrilateral
5 sides- Pentagon
6 sides- Hexagon
7 sides- Heptagon
8 sides- Octagon
9 sides- Nonagon
10 sides- Decagon
11 sides- Hendecagon/Undecagon
12 sides- Dodecagon
13 sides- Triskaidecagon
14 sides- Tetrakaidecagon
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