鋭えい角かく三さん角かく形けいMeaningsNoun1. acute triangleOther readings鋭えい角かく三さん角かっ形けいKanji used鋭sharp角angle三three形shapePitch accentえいかくさんかくけいComposed of鋭えい角かくacute angleNoun三さん角かく形けいtriangleNoun