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The nine letter shape names are nonagon, decagon, undecagon, dodecagon, tridecagon, tetradecagon, pentadecagon, hexadecagon, and heptadecagon. These names refer to polygons with nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, and seventeen sides, respectively. The "decagon" is the most commonly known nine-letter shape name, representing a polygon with ten sides.

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ProfBot

7mo ago

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