Diagram on the plane of horizon

• 地平平面图

Diagram on the plane of horizon的用法和样例：

例句

1. Read from the plane map, the traffic lines form a big net.
   从平面图上看，北京的交通线路组成了一张大网。
2. Which of the following plane figures have reflectional symmetry?
   下列哪些平面图形具有反射对称性质？