The greatest common factor of 180 and 390 is 30.
Half of 780 is 390 because 790 divided by 2 equals 390
380
there is 180 degree in a half turn
180 is half of 360 therefore 180 is half of a cirlce because 360 is a circle
180
390 minutes.
390 seconds
390 minutes.
390 minutes.
360 degrees One half turn =180 degrees 180+180=360
390 minutes (i think?)