立体几何中的“动态问题”是指空间图形中的某些点、线、面的关系是不确定的或可变的一类开放问题,这类问题,结构新颖,集知识的交汇性和综合性、方法的灵活性、能力的迁移性于一体,极富思考性和挑战性,是培养学生空间想象能力和综合思维能力的极好素材.正是因为这些位置关系的 The “dynamic problem” in the three-dimensional geometry refers to an open problem in which the relationship between certain points, lines, and surfaces in a spatial graph is uncertain or variable. This type of problem has a novel structure and integrates knowledge and integration. The combination of sexuality, method flexibility, and the transfer of capabilities are highly reflective and challenging. They are excellent materials for cultivating students’ spatial imagination and comprehensive thinking ability. It is precisely because of these positional relationships.