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dodecagon

[doh-dek-uh-gon, -guh n] /doʊˈdɛk əˌgɒn, -gən/
noun, Geometry
1.
a polygon having 12 angles and 12 sides.
Also, duodecagon.
Origin
1650-1660
1650-60; dodeca- + -gon
Related forms
dodecagonal
[doh-de-kag-uh-nl] /ˌdoʊ dɛˈkæg ə nl/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for dodecagonal

dodecagon

/dəʊˈdɛkəˌɡɒn/
noun
1.
a polygon having twelve sides
Derived Forms
dodecagonal (ˌdəʊdɛˈkæɡənəl) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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