一、地图上判断方向的“万能钥匙”——上北下南,左西右东方向是地图的基本要素之一,要阅读地图一定要学会辨别方向。地图上的方向通常有下列三种情况:1.一般地图中方向的确定;2.指向标定方向;3.经纬网定方向。这三种情况都是以“上北下南,左西右东”为基础的。1.一般地图中方 First, the map to determine the direction of the “master key” - North and South, left and right east direction is one of the basic elements of the map, to read the map must learn to identify the direction. The directions on the map usually have the following three conditions: 1. The direction of the general map; 2. The direction of the calibration; 3. The direction of the latitude and longitude network. These three conditions are based on “North and South, East and West, East and West.” 1. General map of China