立体几何中的角度、长度、面积等有关度量问题,常常涉及范围问题的求解,这一问题由于要求运用变化的观点解决空间位置关系的判定与计算,对学生的空间想象和逻辑思维能力提出了更高要求,这类问题在近几年来高考试题中已初露端倪,已成为高考中的创新性试题,更有越演越烈星星之火 The problems related to metrics such as angle, length, and area in three-dimensional geometry often involve solving the range problem. This problem requires the use of a change point of view to solve the determination and calculation of spatial position relationships, and proposes spatial imagination and logical thinking ability for students. More demanding, this kind of problem has already appeared in the high examination question in recent years, has already become the innovative test item in the college entrance examination, even more fierce star fire.