단위구면에 내접하는 사면체의 수심에 관한 연구

Abstract

The aim of this thesis, is to find out the orthocenter or the monge point on a tetrahedron inscribed to a unit sphere. If the orthocenter is on a tetrahedron inscribed to a unit sphere, I examine the position where it is. If not, I attempt to solve this problem by employing the monge point instead and reveal the position where the monge point is.