In each direction, students should first look at the picture from the positive direction of the central point (observation point), and then see which direction it deviates and how many degrees it deviates. The angle of deviation also depends on which positive direction is taken as the standard.
For example, take Fangfang's home as an observation point and talk about it.
At 70 degrees 500 meters east longitude.
? It's 15 degrees, 400 meters west of due north.
? At 52 degrees 700 meters south latitude.
?