Living Room Principles of Design
This room shows symmetrical balance really well with all 4 chairs being the same across from each other which will give this room a nice, even look. On the wall far back it also shows this and it ties the room together so it doesn't seem off balanced. It wouldn't make sense for a small portion of the room to be symmetrical and then the other half uneven and things placed wherever. And this wall helps.
This room shows variety really well with the contrasting colors red and blue. It gives some more color and creativity to this black and white room. It also helps the room not look plain.
Q