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出典:Wiktionary
From Ancient Greek: εἷς (heîs, “one”) + γωνία (gōnía, “angle”).
henagon (複数形 henagons)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/19 16:46 UTC 版)
In geometry a henagon (or monogon) is a polygon with one edge and one vertex. It has Schläfli symbol {1}. Since a henagon has only one side and only one interior angle, every henagon is regular by definition.
henagon