Adǝgai fandoro, mapdǝye gǝdin-fǝtero mattǝnzǝ faitimbadǝ, shi doni equator lan cintunǝminnason tǝrayindǝ, Mercator projection lan mattǝdǝ yalan- anǝmro mattǝyin, sau ndaran yaye ngal gǝdi-fǝteyedǝ ngal yala-anǝmbe-a kalkalro walzǝro, adǝye sha projection mapye kalkalmaro sǝdin.