henagon

== English == === Etymology === From Ancient Greek: εἷς (heîs, “one”, accusative héna) + -gon. === Pronunciation === IPA(key): /ˈhɛnəɡɒn/, /ˈhɛnəɡən/ === Noun === henagon (plural henagons) A polygon having one edge and one angle. ==== Synonyms ==== monogon