Square

perpendicular

(forming a right angle)

quadrado

(shaped like a square)

quadrado

(used in the names of units)

quadrado

(socially conventional)

careta

(slang: socially conventional person)

casa

(cell in a grid)

cerquilha

(the # symbol on a telephone)

esquadro

(tool)

jogo da velha

(the # symbol on a telephone)

praça

(open space in a town)

quadrado

(type of polygon)

quadrado

(second power)

quadrado

(slang: socially conventional person)

quadrado

(unit of measurement of area)

alinhar

(to adjust so as to align with or place at a right angle)

elevar ao quadrado

(math: to multiply by itself)

resolver

(to resolve — see also resolve)