360:30=12 unghiuri de 30⁰ in jurul unui punct
60':12=5 minute
360:60=6 unghiuri de 60⁰ in jurul unui punct
60':6=10 minute
360:135=360/135=8/3=2,(6) unghiuri de 135⁰ in jurul unui punct
60':2,(6)=60':8/3=60'×3/8=22,5 minute=22' 30"
360:1=360 unghiuri de 1⁰ in jurul unui punct
60':360=60/360=1/6 min=1/6 ×60" =10"
' = minut
" = secunda
