How to learn geography well - longitude and latitude lines?

Slip on to share with you:

East Great East Longitude, West Great West Longitude. The north increases the northern latitude, and the southern latitude increases the southern latitude. Northern hemisphere, southern latitude southern hemisphere. The east and west hemispheres are difficult to distinguish, the dividing line should be clear, 20 ° west longitude, 160 ° east longitude, small east and big west should be remembered, and 0 ° east hemisphere, 180 ° western hemisphere!