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/tɹaɪˈdɛ.kə.ɡɑn/ · noun
(geometry) A polygon having thirteen sides and thirteen angles..
Use tridecagon when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Tridecagon means (geometry) A polygon having thirteen sides and thirteen angles..
Common synonyms include 13-gon, trisdecagon, triskaidecagon.
The opposite depends on the specific sense.
Use tridecagon where its definition matches the intended context.
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