Which type of angle do construction workers use when building to make sure that the walls and floors of a building are perpendicular?

7 answers

the answer is right angle hehhehehehhe
what are u giggly about huh
:O U ALMOST MADE ME MESS UP GIRL WHATS WRONG WITH YOU WE HERE STRUGLIN AND UR PLAYING AROUND -punchs her and gives her a bloody black purple ugly very nasty eye- >:C GROWLS
wth
LMAOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO SRY MAYBE TO MANY O'S -_- OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO SRY SCHOOL MAKES ME SAD AND DEPRESSED AND STRESSED
Um... Did I show up at a bad time?
about 4 years late yea I think ya did