等とう角かく三さん角かく形けいMeaningsNoun1. equiangular triangle; equilateral triangle; regular triangleOther readings等とう角かく三さん角かっ形けいKanji used等equal角angle三three形shapeComposed of等とうclass; order; rank; et cetera; etc.; and the like; equal; iso-Noun角かくangle; square; cube; bishop; third degree (of the Japanese and Chinese pentatonic scale); Chinese "horn" constellation (one of the 28 mansions); jiao (monetary unit of China; one-tenth of a yuan)Noun三さん角かく形けいtriangleNoun