THIS QUESTION IS RELATED TO COMPUTER GRAPHICS. SOLVE IT WITH PROPER ANSWER AND EXPLANATION. 4.(a) Consider a rectangle A(-1, 0), B(1, 0), C(1, 2) and 6 D(-1, 2). Rotate the rectangle about the line y=0 by an angle a=45' using homogeneous co-ordinates. Give the new co-ordinates of the rectangle after transformation.