| [ QuizWit ] in KIDS 글 쓴 이(By): guest (wiking) 날 짜 (Date): 1998년01월27일(화) 06시56분21초 ROK 제 목(Title): Re: chung님의 답이 맞습니다만... If great POIN insists on giving details, here goes a sketch. Assume a triangle which has three mass points on vertices, where Ma = BC, Mb = CA, and Mc = AB. Then, the distances of B and C from the bisecting line of the angle BAC are propotional to AB and CA respectively. Therefore the total torque along the line is zero showing that the mass-center should be on that line. Repeating the same argument, the mass center should be at the intersection of three bisecting lines. That is "Nae-Sim" of ABC. |