octadecagon
التعريفات والمعاني
== English ==
=== Etymology ===
From octadeca- + -gon.
=== Pronunciation ===
=== Noun ===
octadecagon (plural octadecagons)
(geometry, rare) A polygon with 18 sides and 18 vertices.
==== Synonyms ====
18-gon
==== Translations ====