The GCD can be visualized as follows. Consider a rectangular area "a" by "b", and any common divisor "c" that divides both "a" and "b" exactly. The sides of the rectangle can be divided into segments of length "c", which divides the rectangle into a grid of squares of side length "c". The greatest common divisor "g" is the largest value of "c" for which this is possible. For illustration, a 24-by-60 rectangular area can be divided into a grid of: 1-by-1 squares, 2-by-2 squares, 3-by-3 squares, 4-by-4 squares, 6-by-6 squares or 12-by-12 squares. Therefore, 12 is the greatest common divisor of 24 and 60. A 24-by-60 rectangular area can be divided into a grid of 12-by-12 squares, with two squares along one edge (24/12 = 2) and five squares along the other (60/12 = 5).