Answer:
An informal letter is a letter that is written in a personal fashion. You can write them to relatives or friends, but also to anyone with whom you have a non-professional relationship, although this doesn't exclude business partners or workers with whom you're friendly.
Explanation:
It is usually referred to by using letters to indicate which lines rhyme; lines designated with the same letter all rhyme with each other. So it would be AA,BB
Maintaining eye contact with the speaker
I think.
because you could be writing notes, and that doesn't include eye contact
