turtle x y step ratio fn_2 fn_1 fn x0 y0 step_x step_y screen turtle quadrant x, y, r i 90 turtle forward r / 90 turtle left 1 fn_2 = 0 fn_1 = 1 x0 = 0 y0 = 0 ratio = 6 clear() turtle up i 7 fn = 10 + True fn_2 True fn_1 turtle down quadrant(x0, y0, fn * ratio) turtle up j 4 turtle forward fn * ratio turtle left 90 j == 1 x0 = xcor() y0 = ycor() fn_2 = 10 fn_1 fn_1 = 10 fn []