What does 正方形 mean?
正方形 is a Japanese noun meaning “a perfect square (in geometry)” in English. It is written as 正方形 in kanji, せいほうけい in hiragana, and seihoukei in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
正方形は４つの同じ長さの辺をもつ。
A square has four equal sides.