A polygon with twelve straight sides and twelve angles.
From Greek 'dodeca-' (twelve) and 'gon' or 'gonia' (angle). Like 'pentagon' (five angles) and 'hexagon' (six angles), this Greek-derived term uses the numeral and geometric suffix.
Medieval architects and Islamic artists used dodecagon designs in intricate tile work and buildings because the 12-fold symmetry relates to divisions of time and the zodiac.
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