6. (7 points) There is a piece of paper in the shape of an isosceles right triangle. Fold this triangle along the altitude to its hypotenuse; fold it again along the altitude to its hypotenuse. At this point, you get an isosceles right triangle with the length of the legs being 2 cm (as shown in the shaded part of the figure). Therefore, the area of the original isosceles right triangle piece of paper is $\qquad$ square centimeters.
【Answer】Solution: $2 \times 2 \times 2 \times 2 \times 2 \div 2=16$ (square cm); therefore, the answer should be 16.