Fi si awọn ayanfẹ
Yọ kuro lati awọn ayanfẹ
Agbegbe ti a square, square agbegbe agbekalẹ isiro
Agbegbe ti a square, square agbegbe agbekalẹ isiro faye gba o lati ri ohun agbegbe ti a square, nipasẹ awọn fomula, lilo ipari ti square mejeji tabi akọ-rọsẹ.