What type of roof has sloping surfaces and is typically used on houses?

A pitched roof is characterized by its sloping surfaces, providing effective drainage of rain and snow. This design is commonly utilized in residential buildings, as it enhances aesthetic appeal and allows for the creation of usable attic space. The steep angles of a pitched roof also contribute to its durability against harsh weather conditions, such as heavy snow or strong winds, by preventing water accumulation that can lead to leaks or structural damage.

In contrast, other types of roofs may not offer the same benefits; for instance, a flat roof is minimal in slope and can be prone to water pooling, while a curved roof often serves a different architectural purpose and may not be as commonly found on traditional houses. A truss roof refers to a structural framework that supports the roof structure but is not a type of roof itself. Thus, the pitched roof distinctly meets the requirements outlined in the question.