一いっ角かっ形けいMeaningsNoun1. monogon; henagonOther readings一いち角かく形けいKanji used一one角angle形shapeComposed of一いっ角かくcorner; section; point; part; one horn; pillar (of a group, system, etc.); member (of an organization, etc.); first corner; narwhal (Monodon monoceros)Noun形けいform; adjective; i-adjective (in Japanese)Suffix