Question II.1.12. Determine which of the following expressions make sense, geometrically describe the meaning of the expressions, and evaluate the expressions when possible: (a) (4, 1) + (2, 3); (b ) ( 2 , 4 ) - (3, 2 ) ; (c) ((4, 1) - (2,3)) + (5, -1); (d) (2, 4) - (3, 2); (e) (2, 4) + (3, 2); (f) (9, 2) + (5, -1); (g) ( (4, 1) + (2,3)) - (5, -1)