Drag the verticles A, B and/or C of the triangle.[br]The barycentric coordinates of the center of gravity sremain the same.[br]In the normalised form we write [b]P= (1/3, 1/3,1,3)[/b]. The sum of the coordinate numbers is 1.[br]In the not-normalised form we write [b]P: (1 : 1 : 1)[/b]. Here we don't divide by 3.