文档介绍：高中数学必修二知识点总结
高中数学必修二
第一章 空间几何体
1、棱柱
定义:有两个面互相平行，其余各面都是四边形，且每相邻两个四边形的公共边都互相平行，由这些面所围成的几何体。
分类:以底面多边形的边数作为分类的标准分为三棱柱、四棱柱、五棱柱等。
表示:用各顶点字母，如五棱柱或用对角线的端点字母，如五棱柱
'''''ABCDE,ABCDE
几何特征:两底面是对应边平行的全等多边形;侧面、对角面都是平行四边形;侧棱平行且相等;平行于底面的截面是与底面全等的多边形。
2、棱锥
定义:有一个面是多边形，其余各面都是有一个公共顶点的三角形，由这些面所围成的几何体
分类:以底面多边形的边数作为分类的标准分为三棱锥、四棱锥、五棱锥等
'''''P,ABCDE表示:用各顶点字母，如五棱锥
几何特征:侧面、对角面都是三角形;平行于底面的截面与底面相
似，其相似比等于顶点到截面距离与高的比的平方。
3、棱台
personal safety and safety equipment. construction overall arrangement of instruments (see the following figure) ... cabinets, Terminal cabinets, enclosures, UPS battery cabinet base hot-rolled angle steel, hot-rolled angle iron and steel production, the support base as a whole should be kept straight, the weld size overall dimensions meet the requirements should be the principle, Stent positioning and embedded parts after welding in prison. bracket mounting holes required on arrival at the scene, cabinet base hole dimension processing. Enclosure base must be in the control room the control room floor before you start the installation to complete, and activities should be considered a floor support frame set match. Base installation errors shown in the table below. Permissible deviations mm/m items mm/full length straight level 1, 5, 1, 5, position error and parallel degree 5 system Panel, cabinet installation unpacking and inspection (1) together with owners, supervision carried out jointly on behalf of the company, signed after the inspection opening inspection records; (2) before unpacking, on the surrounding floors, tables and chairs, tools, static elimination measures taken, check the device packaging is complete; upon opening the box, you should check if the packaging is damaged, whether the water, moisture-proof, shock-proof measures is good; (3) special tools should be used when opening the box, press level, in order to open packaging; be cautious, non-violent beating;