[alogo] Square into square

Consider square EFGH into square ABCD. Show that area(CGFB)+area(AEHD) = area(CGHD)+area(BFEA). The figure below shows a hint to solve the problem. It reduces to show that the areas of hexagons area(EFBJIA) = area(AIMLKN).

[0_0] [0_1] [0_2]
[1_0] [1_1] [1_2]
[2_0] [2_1] [2_2]


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