Visually a round rug works better in a square space than a rectangular space and you might like to create two separate areas within a large living room.
Round table on square rug.
A rug should visually relate to whatever sits on over or near it.
Interestingly people have traditionally teamed round area rugs with round tables such as dining tables and coffee tables.
Round table round rug.
Setting off a round table with a square rug gives the room some geometric variety and grounds the table in the room.
For example a round dining table and a round rug below speak the same design lingo while a square rug and bold boxy light.
1 16 of 949 results for round kitchen table rug safavieh montauk collection mtk330b handmade flatweave ivory and navy cotton round area rug 6 in diameter 3 7 out of 5 stars 5.
Why not try a circular rug right under a square table.
Square table square rug i have no idea if that is an official rule or not as i am not school trained in design.
A good rule of thumb for rugs is that it should comfortably fit your table and chairs on it without fear of falling off the edge and i like to repeat the shape of the table with the rug i e.