4. Consider the gure below. There is an observer at a: = d and an object of height h at :c = 0. height = h O ) X=d X H e [4] (3) Use similar triangles to determine the height to of the object When performing a perspective projec- tion onto m = D. [4] (b) Suppose h = 6 cm and d = 3 111. Where should we place the object so that it appears to have height 1.1.- = 3 cm