This is pretty tricky. Fortunately it wasn't too bad for me, but one thing I learned was not to analyze each angle. I found I did better when I glanced at them as a whole and then quickly ranked them in my head before looking at the answer choices. These are meant to be quick and easy points so treat them as such. For me anyway, my first guess was usually correct.
Also, you for sure cannot hold things up to the screen to measure angles(ie. laminated sheets). You aren't even allowed to touch the screen.