也谈四面体的“五心”

Talk About The Conception of Tetrahedron "Five Centre

本文通过类比,从三角形的“五心”(外心、内心0、旁心、重心、垂心)的概念得出四面体的“五心”的概念,并对其进行详尽的推证。向量法、解析法兼用,将几何证明推进到定量能算的层面。

In this paper , We give the conception if tetrahedron 'five centre' by analogism from the conception of triangle 'five centre' , and show that it exhaustively. We also use the anlytic method and vector method , and devolep geometrical. proof to the extent of calculation.