Here I have used Inventor 2015 and made a passenger base for a automoblox model. It is a 3D piece that has 4 basic hole shapes made inside of it so that you can place 4 matching figures into it. This was quite hard at first, but after getting all the measurements from the sketch given, it became easier to do. Unfortunately, I was only able to do the rectangle, circle, and triangle. I was able to do the star, but I had run out of time at the end.