dodecagon
noun/dəʊˈdekəɡən/
/dəʊˈdekəɡən/
(geometry)- a flat shape with twelve straight sides and twelve angles compare dodecahedronTopics Colours and Shapesc2Word Originlate 17th cent.: from Greek dōdekagōnon, neuter (used as a noun) of dōdekagōnos ‘twelve-angled’.
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dodecagon