To sum it up:
If your components are post 80's the teeth are supposed to look different by design
You can't rotate your chainring 90 degrees unless your crank has 4 arms. Most have 5
Rotating a modern chainring will make the teeth pattern off and the chain pin in the wrong place
The only proper way to rotate a modern chainring is by pedalling on the bike
btw, if you have a modern bike, don't freak out if your cassette cogs looks out of alignment or out of true.