Final answer:
In engineering, a connection is used to join structural elements. Trusses are examples of such structures where these connections play a significant role in providing support.
Step-by-step explanation:
A connection can be defined as a structural element used to attach other structural elements to one another. In the context of building or engineering works, this connection is often a part of a more complex structure such as trusses. Trusses are rigid structures formed of relatively slender pieces, joined so as to surround sizable empty spaces or nonstructural panels, and are generally used as a major support in building or engineering works, machinery, furniture, etc.