One of the mysteries of the English language finally explained.
A plane figure with twelve straight sides and angles.
- ‘How many triangles does it take to make a dodecagon?’
- ‘Dissections can get quite elaborate: A seven-pointed star becomes two heptagons; a dodecagon turns into three identical squares; and so on.’
- ‘The authors describe a paper by Kürschák written in 1898 in which a regular dodecagon inscribed in a unit circle is investigated.’
- ‘If you have a 40 yard loop with a post every yard, it doesn't matter whether it's a circle, a square, or a dodecagon.’
- ‘Incidentally, globes representing the Earth are often made this way using a regular dodecagon as the equatorial base.’
Late 17th century: from Greek dōdekagōnon, neuter (used as a noun) of dōdekagōnos ‘twelve-angled’.
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