Mono = one, hence "Monologue", which is a one-person talk.
Di = two, hence "Dialogue", which is a two-person talk.
Tri = three, hence "Trialogue", which is a three-person talk. This is not commonly used - discussion or conversation are more commonly used.
A dialog typically involves at least two people engaging in a two-way conversation. It can also include more participants, depending on the context and purpose of the dialog.
No, 'he' is a third person pronoun.The first person is the speaker: I enjoyed the concert.The second person is the one spoken to: You enjoyed the concert.The third person is the one spoken about, not involved in the dialog: He enjoyed the concert.
Soliloque
1 person...
One person. Lee Harvey Oswald was the only person involved in his death.
imbroglios
Different for each person. Pay more attention to the dialog.
a lot
Zip
The Person Involved in the development of computer is The Person Involved in the development of computer
five times
Dialog boxes