三视图是新课程中立体几何的新增内容,通过这部分内容中的具体操作,能帮助我们感受用平面图形来表示空间几何体的思想,形成立体感;有利于我们正确认识空间几何体的有关性质,这对理解空间图形中点、线、面的位置关系很重要.同学们在学习过程中要注意理解画图的规则,按照画三视图的规则画图. The three views are new contents of the three-dimensional geometry in the new course. Through the specific operations in this part, we can help us to feel the idea of ​​representing the spatial geometry with a planar figure and form a three-dimensional sense; this helps us to correctly understand the properties of the space geometry. This is important for understanding the positional relationship between points, lines, and planes in a spatial graph. Students must pay attention to the rules of drawing in the learning process and paint according to the rule of drawing three views.