动点的轨迹与立体几何相结合的问题要求学生结合曲线的性质和点在立体几何中的特征,灵活地运用知识,创造性地解决问题.本文旨在对有关动点的轨迹在立体几何中的运用作出一个小结归纳,仅供参考.图1例1如图1,在正方体ABCD-A1B1C1D1中,P是侧面CBB1C1内一动点,若点P到直线BC与直线C The combination of the trajectory and solid geometry of the moving point requires students to combine the nature of the curve and the characteristics of the point in the solid geometry, apply knowledge flexibly, and solve the problem creatively. This paper aims at the trajectory of the moving point in the three-dimensional geometry. Use to make a summary, only for reference. Figure 1 Example 1 Figure 1, in the cube ABCD-A1B1C1D1, P is a moving point in the side CBB1C1, if the point P to the straight line BC and straight line C