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dodecagon

American  
[doh-dek-uh-gon, -guhn] / doʊˈdɛk əˌgɒn, -gən /

noun

Geometry.

  1. a polygon having 12 angles and 12 sides.

dodecagon British  
/ dəʊˈdɛkəˌɡɒn, ˌdəʊdɛˈkæɡənəl /

noun

  1. a polygon having twelve sides

"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

Other Word Forms

  • dodecagonal adjective

Etymology

Origin of dodecagon

First recorded in 1650–60; dodeca- + -gon

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The perimeter of the dodecagon to be inscribed in a circle is greater than the perimeter of the circle.

From A Budget of Paradoxes, Volume I by Smith, David Eugene

In the Arabic pattern on page 276 the dodecagon appears as the basis, and the remarkable powers of the Arab designer are shown in the use of symmetry without employing regular figures.

From The Teaching of Geometry by Smith, David Eugene

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.