Why are the sofa legs inclined?

Traditional furniture, regardless of the east and the west, used tenons and mortises in structure at that time, and the parts had strong bite strength and were not easy to loosen. Therefore, relatively stable furniture, such as cabinets, can directly use straight legs. But now the furniture made in the factory is connected with a lot of screws and hardware in order to transport and disassemble it quickly and conveniently. The strength is much weaker, and it is easy to loosen after lateral stress, so angled legs are needed to enhance stability. Of course, on the other hand, there are also reasons for design style.