1. How many faces?
9-Did you find them all?
Too see marked photo of all 9 faces please CLICK HERE

2. The Two Triangles
The two shapes are not identical since the two triangles do not have the same slope. The form with the space actually has a bulge on the hypotenuse which takes up one additional square.  Test it on graph paper and you will see that the hypotenuse is not a straight line.

3. RIGHT = WRONG
  
     24153
     24153
   _______
     48306