Choosing the right size of area rug is just as important as selecting a pattern or color. Whether rectangle, square or round, the perfect size and shape of a rug is critical to achieving the right look for a room's particular proportions and design.

For example, the size and shape of a rug can help define sitting, dining or accent areas of a space by accentuating particular groupings of furniture. Furniture can be positioned either directly on the rug or around it depending on the size of the room or the aesthetics you want to achieve. Use of multiple rugs can draw the eye from one room or area to another.

However, there's a science to choosing the proper size of rug for a particular application. Use this handy guide to help you determine the right rug for your room.