“动态”问题是高考立体几何问题中最具创新意识的题型,它包含了一些“动态”的点、线、面等元素,给静态的立体几何题赋予了活力,使题意更新颖, 同时“动态”的存在也使立体几何题更趋灵活,加强了对学生空间想像能力的考查. 一、动点轨迹问题动点轨迹问题是2004年高考立体几 The “dynamic” question is the most innovative type of questions in the college entrance geometry problem. It contains some “dynamic” points, lines, faces and other elements, giving the static three-dimensional geometric questions vitality. The idea is more novelty, and the presence of “dynamic” also makes the three-dimensional geometry problem more flexible and strengthens the examination of students’ spatial imagination. First, the moving point trajectory problem is the trajectory of the college entrance examination in 2004.