立体几何重点题型的特点:一是《考试说明》所要求的“空间想象能力、逻辑思维能力和运算能力”;二是以分步设问、层层递进、环环紧扣、由浅入深的组合题;三是多以三垂线定理为依托,空间线面位置关系的论证和角、距离、体积的计算等;四是多为三、四棱锥或棱柱等知识为载体的解答题.下面探求这几类题型及其解法. The features of the three-dimensional geometric focus question type: First, the “space imagination ability, logical thinking ability, and computation ability” required by the “exam description”; second, step-by-step questioning, progressive layers, tightly ringed, and shallow Deep combination questions; the third is based on the triple vertical line theorem, space line surface position relational arguments and angle, distance, volume calculation, etc.; four is mostly three, quadratic pyramid or prism and other knowledge as the carrier of the solution The following search for these types of questions and their solutions.