How does the new iphone 5 adapter work?

I just got a iphone 5 and i know that they changed the adapter. But how are you meant to plug it into the socket because it was fit and the design is two prongs that are flat and square like so how does it work? No nasty comments i just want help!

They also changed the plug. You need to get the new "lightning" cables or the adapter that turns the 30-pin into lightning.