等とう辺へん

noun

equal sides

Used in geometry to describe a polygon whose sides are all of equal length. Most commonly appears in the compound 等辺三角形 (equilateral triangle).

• 等とう辺へん三さん角かく形けいの三みっつの辺へんはすべて同おなじ長ながさです。

  All three sides of an equilateral triangle are the same length.