answersLogoWhite

0

Degrees, minutes, and seconds are used to divide the earth's surface. One degree is 1/360 of the earth's perimeter, and one minute is 1/60 of one degree, and one second is 1/60 of one minute. At the equator, the earth's perimeter is approx 24,000 miles, so one degree is approx 66.7 miles- this was traditionally called 60 nautical miles, so one minute was one nautical mile. Of course as you get nearer to the poles, the miles per degree on a parallel to the equator reduce, as the meridian lines converge. On a meridian line however the unit distance per degree is constant, except for the slight variation due to the flattening of the earth at the poles.

User Avatar

Wiki User

16y ago

What else can I help you with?