等とう辺へん三さん角かっ形けいMeaningsNoun1. equilateral triangle; regular triangleOther readings等とう辺へん三さん角かく形けいKanji used等equal辺local area三three角angle形shapeComposed of等とうclass; order; rank; et cetera; etc.; and the like; equal; iso-Noun辺へんarea; vicinity; region; side; edge; circumstancesNoun三さん角かっ形けいtriangleNoun