This is informal because the bookshelf,fireplace and tv stand are different sizes but it looks good together.
Q
This is Formal because of the ceiling and also it could be emphasis because the ceiling was the first thing i looked at.
This picture would be emphasis because the arch way was the first thing i looked at.
This picture would be emphasis the top of the fireplace was the first thing i looked at.
This picture is Formal because both of the bookshelfs are the same size / shape.
This picture is Informal because the fireplace and picture are not the same thing or shape but it creates balance.
This is informal because the bookshelf,fireplace and tv stand are different sizes but it looks good together.
Q