2. The square, the parallelogram, and the medium triangle all have the same area – twice the small triangle. The large triangles have an area twice as large as the medium triangle, and hence, twice as large as the square and the parallelogram.

Thus, if the area of the small triangle is 1 then the area of the square, the parallelogram, and the medium triangle is 2, and the area of the large triangle is 4.