點計Latitude 同 Longtitude？

請往
http://www-istp.gsfc.nasa.gov/stargaze/Slatlong.htm

有詳細說明及圖示

2007-05-26 16:59:03 補充：
Latitude is the angular distance, in degrees, minutes, and seconds of a point north or south of the Equator. Lines of latitude are often referred to as parallels.

Latitudes and longitudes are used to locate places on Earth.