A quadrilateral with four equal sides and four right angles; a square (geometric shape).
紙を正方形に切って折り紙を作った。
I cut the paper into a square to make origami.
この部屋は正方形だから、家具の配置が簡単だ。
This room is a square, so arranging the furniture is simple.
正方形の面積は一辺の長さの二乗で求められる。
The area of a square is found by squaring the length of one side.