A street that is shaped like a half-moon is known as?

A street that is shaped like a half-moon is referred to as a crescent. This term is used in urban planning and geography to describe a specific street layout that curves in the shape of a crescent moon. Such street patterns are often designed to create a more appealing and aesthetically pleasing environment, as well as to allow for more effective drainage and landscaping. The shape typically accommodates residential areas with houses set back from the street, promoting a sense of community and reducing traffic flow.

The other terms, while also related to street layouts, do not accurately describe the half-moon shape. An arcade usually denotes a type of covered passageway or shopping area, often lined with shops. A circle refers more broadly to a circular street layout or roundabout, which does not match the half-moon shape. Lastly, a loop suggests a road that curves back on itself but is not specifically defined by the crescent shape. Therefore, the most fitting description for a street shaped like a half-moon is 'crescent'.