An imaginary plane that divides the head so that the face is one side and the back of the head is the other side is known as

The coronal plane or frontal plane

by looking at someone you know and chat with them or look on something like a painting or anything then the person or bring a book with you and act like you reading something or think about something that you like so you can spaceout and not put attention to what is happening around you .

that is so