a system for assigning two numbers to every point on a surface
imaginary line that lies at 0 degrees latitude and circles Earth midway between the north and south poles, dividing the earth into the northern hemisphere and the southern hemisphere
distance in degrees north and south of the equator
circles on which all points have the same latitude north or south of the equator
distance in degrees east and west of the Prime Meridian
semicircles on which all points have the same longitude
imaginary line representing 0 degrees longitude, running from the north pole, through Greenwich.
England, to the south pole