Is an example of of a rhetoric?

Answer 1

rhetorical question are essentially questions that dont need to be answered. like if a teacher asks you a question where he/she knows the answer to, or he/she knows that you know the answer but does not ask you to answer

A 'rhetorical question' as described above is a rhetorical device (often called a 'figure of speech') called Hypophora (they all have fancy Latin or Greek names, unfortunately). There are dozens of different devices.

A good example would be 'Ask not what your country can do for you - ask what you can do for your country.' This is a device called Chiasmus, where the words in a clause or phrase are rversed in the next, i.e. 'country ... you' becomes 'you ... country.'