<image>As shown in Figure 1, outside the square ABCD, isosceles right triangles △ABF and △ADE are constructed, ∠FAB = ∠EAD = 90°. Connect AC and EF. In the figure, find a triangle that is congruent to △FAE, and explain the reason;
Application:
Using the four sides of the square ABCD as edges, construct squares outside each side, as shown in Figure 2. Connect EF, GH, IJ, and KL. If the total area of the four shaded triangles in the figure is 12, then the area of the square ABCD is _____.