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Hey guys, how are you? Another lesson on Plane Geometry, covering the four notable points of a triangle: Barycenter, Incenter, Circumcenter and Orthocenter. We will also see the Theorem of the Internal Bisector of a triangle. Happy studying! _ SUBSCRIBE: / professorferretto WEBSITE: www.professorferretto.com.br FACEBOOK: www.facebook.com/maismatematica