let
n边形各点为A1,A2,..,An
么该点=C,原点 =0
CA1+CA2+..+CAn=0
(OA1-OC)+(OA2-OC)+..(OAn-OC)=0
OA1+OA2+..+OAn=nOC
OC=(OA1+OA2+..+OAn)/n
=>C为重心
let
n边形各点为A1,A2,..,An
么该点=C,原点 =0
CA1+CA2+..+CAn=0
(OA1-OC)+(OA2-OC)+..(OAn-OC)=0
OA1+OA2+..+OAn=nOC
OC=(OA1+OA2+..+OAn)/n
=>C为重心