What type of joint is commonly used to connect two pieces of wood at an angle?

A mitre joint is specifically designed to connect two pieces of wood at an angle, typically at 45 degrees, creating a clean and aesthetically pleasing corner. This type of joint is particularly common in framing and finishing work, such as in picture frames, moldings, and cabinetry. The angled cut at each end allows the two pieces to fit tightly together, which can enhance visual appeal and ensure that the joint is less noticeable than other types, like butt joints.

In contrast, a lap joint involves overlapping two pieces of wood, which can be useful for strength but does not typically offer the clean angle needed for corner connections. A butt joint simply connects two pieces edge-to-edge without any angled cuts, making it unsuitable for angled connections. The tongue and groove joint is designed primarily for edge-to-edge connections or fitting panels together, rather than for connecting angles. Hence, the mitre joint is the preferred choice for achieving precise and attractive angle connections in woodworking.