Basketball rule questions

Originally Posted by Nevadaref

You are unsure about your answer because you need to spend more time reading the rules and case books.
Go look up the definition of dunking in the NFHS books. Tell me what it says about the ring or imaginary cylinder above the ring.

According to my understanding, it is goaltending whenever the ball is blocked in its downward flight, above the rim, and has a chance to go in.

However, after reading the rules a few times, I am still confused. Is a dunk attempt considered a try? Can you explain it to me?

Also, I didn't see any wording about an "imaginary cylinder", can you point out where it says that?