“动态”立几问题是高考中的创新题型,它渗透了一些“动态”的点、线、面元素,给静态的立体几何赋予了活力.由于“动态”的存在,也使立几问题更趋灵活,更具挑战性.如何探究此类问题,本文将举例说明.一、当动态问题难于解决时,可采用暂时固定的方法,逆向思索,促使几何关系明朗化 “Dynamic” establishes a few questions that are innovative questions in the college entrance examination. It permeates some “dynamic” points, lines, and surface elements, giving vitality to the static three-dimensional geometry. Due to the existence of “dynamic”, it also causes several problems. More flexible, more challenging. How to explore such issues, this article will illustrate. First, when the dynamic problem is difficult to solve, you can use a temporary fixed method, reverse thinking, to promote the clear relationship between the geometric