平面正三角形坐标图是近几年高考试题中出现的一种新的坐标图(三轴坐标图) ,它给出一个正三角形,内作若干三条边的平行线,并标注出三个坐标所代表的变量,要求考生读取这些变量(重要地理要素)的数据,并根据数据分析、比较一些重要的地理现象、地理特征及其产生的原因等。平面正 The plane equilateral triangle chart is a new coordinate chart (triaxial coordinate chart) appearing in the high exam questions in recent years. It gives an equilateral triangle with parallel lines of several three sides and marks the three coordinates. The representative variables require the candidate to read the data of these variables (important geographic elements), and analyze and compare some important geographical phenomena, geographical features, and the reasons for their occurrence according to the data. Positive plane