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A.Word.A.Day--hendecagon

Pronunciation RealAudio

hendecagon (hen-DEK-uh-gon) noun

An eleven-sided polygon.

[From Greek hendeca- (eleven), from hen, neuter of heis (one) + deka (ten) + -gon (angled), from gonia (angle).]

Another name for hendecagon is undecagon. A solid having eleven faces is called a hendecahedron or an undecahedron.

The Canadian dollar coin, nicknamed Loonie, is a hendecagon. And a hendecagon surrounds the portrait on the US Susan B. Anthony dollar coin.

"This is an 11-sided polygon, which may also be called a hendecagon."
Thomas H. Sidebotham; The A to Z of Mathematics: A Basic Guide; Wiley-Interscience; 2002.

"The setting is decadent forests inhabited by 'truncated undecagon figures', fragments of selves."
Suzanne Nalbantian; Anais Nin: Literary Perspectives; Palgrave Macmillan; 1997.

This week's theme: words related to the number eleven.

X-Bonus

And Silence, like a poultice, comes / To heal the blows of sound. -Oliver Wendell Holmes Sr., poet, novelist, essayist, and physician (1809-1894)

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