DodecagonPronunciation: /ˈduˈdɛkˈæɡˈɑn/Dodecagon (noun)A flat shape with twelve straight sides and twelve angles.ExamplesA dodecagon is a twelve-sided shape.The dodecagon has twelve sides and twelve angles.Related Wordsdodecahedrondodecasyllabledodecathlondodecamerondodecaneoctagonhexagonheptagon