I like this girl, how can I get her to like me?

I was in my math class, and this girl walks into my class. She came from another school. She is very beautiful, and I love the way she is. I think I am pretty good looking. I've been told that I am cute. I am 6 feet, 17. This girl is 17 as well. help! O I'm sorry. I had forgotten to add. I have been talking to her in class. it's just confusing. cuz Idk if she does seem interested in me or not. But we talk really kool. I help her with math. but I have no idea. help!