Look at a school plane and analyze and answer the following questions (1). What is the basis of your judgment? _ _ _ _ _. This school is _ _ meters long and _ _ meters wide.

(1) If there is a beacon on the map, use the beacon arrow to point to the north to determine the direction;

(2) According to the scale in the figure, 1cm on the figure indicates the field distance 100 m, the measured principal 12cm, the field distance 1200 m, the width is 7 cm, the field distance is 700 m, and the area is 840,000 square meters;

(3) According to the direction of the arrow pointing to the north, the direction of the school gate is the northeast of the campus;

(4) According to the arrow pointing to the north, the school library is in the southwest of the campus, the school gymnasium is in the northeast of the library and the artificial lake is in the northeast of the campus;

(5) According to the scale, the school teaching building is 600 meters long and 500 meters wide, covering an area of about 300,000 square meters.

So the answer is: (1) the pointer arrow points to the north to determine the direction; (2) 1200; 700; 84; (3) Northeast China; (4) Southwest; Northeast China; Northeast China; (5)30.

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