Missouri Journal of Mathematical Sciences, cilt.18, sa.3, ss.221-233, 2006 (Scopus)
In this work, it is shown that the group of isometries of the plane with respect to the Chinese Checkers metric is the semi-direct product of the Dihedral group D8 and T(2), where D8 is the (Euclidean) symmetry group of the regular octagon and T(2) is the group of all translations of the plane. Furthermore, some properties of the CC-plane are studied and the area formula for a triangle is given.