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图1中圆圈是以M点为中心的等太阳高度线,数值为X°(X≥0)。弧NMP是地球大圆的一部分,N与P位于同一纬线,且N在M的西南方向。回答1～2题。
The circle in Figure 1 is the same solar altitude line centered at Point M and has a value of X ° (X≥0). Arc NMP is part of the Earth’s large circle, N and P are in the same latitude, and N is in the southwest of M. Answer 1 ~ 2 questions.