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Triangle. 3. 9 sides. Nonagon. 11 sides. Undecagon. 7 sides. Heptagon. Dodecagon. 12. 5 sides. Pentagon. 8 sides. Octagon. Decagon. 10. Hexagon. 6. Octagon. 8. Quadrilateral. 4. 10 sides. Decagon. 3 sides. Triangle. nonagon. 9. Pentagon. 5. 4 sides. Quadrilateral.
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