Proof: Take a square, and divide it 4 equal pieces. Now take 3 pieces and let the area of this part be A (See the red part in Figure-1a). Now repeat this process on the fourth piece of the orginal square. This time the area of the three pieces is is A/4 (See the light blue area in Figure-1b). Repating this process again and again we may get a sequence of areas,

Figure-1a	Figure-1b	Figure-1c	Figure-1d
Figure-1e

The part

goes to A/3 (See Figure-2a)

Thus,

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