Multiple Kosnita Menggunakan Incenter Dan Centroid Melalui Excenter

Kosnita’s theorem is usually constructed using circumcenter-circumcenter. In this thesis, Kosnita’s theorem is developed by using incenter-circumcenter, incenter-incenter, incenter-centroid and centroid-centroid through excenter triangle. The proof of this theorem uses the simple geometry concept such as bisector, centroid, orthocenter and congruency. In this thesis it can be proved th…