如图,矩形的面积为8,它的两条对角线交于点,以、为两邻边作第

如图,矩形的面积为8,它的两条对角线交于点,以为两邻边作第一次变换得到菱形,菱形的对角线交于点,同样以 为两邻边作第二次变换得到矩形,……,依次类推,第次变换后,所得到的图形的面积为           

 


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