Which joint is formed by fitting the end of one member into two grooves cut into the edge of a second member?

• A. Bridle joint
• B. Mortice and tenon
• C. Finger joint
• D. Domino joint

Answer: (A)

A bridle joint is being described here. In this type, the end of one piece is shaped to form a rectangular projecting “bridle” that fits into a corresponding slot cut into the edge of the other piece. Those two grooves in the edge create a channel for the bridle to sit in, giving a solid right‑angle connection with good glue area and resistance to twisting. This setup is different from mortice and tenon, which uses a single hole (mortise) and a matching tenon, and from finger joints or domino joints, which involve interlocking fingers or loose-tenon pieces rather than a bridled end fitting into an edge groove.