Which type of roof slopes to two sides?

A gable roof is characterized by its two sloping sides that meet at a central ridge, forming a triangular shape on each end of the building. This design effectively allows for efficient water drainage and is particularly beneficial in areas with heavy rainfall or snowfall. The steep pitch of the gable roof also provides additional space in the attic, making it a popular choice for residential architecture.

In addition to its functional advantages, the gable roof is aesthetically pleasing and has been a traditional element in various architectural styles throughout history. It also allows for the incorporation of features such as dormers, which add light and ventilation to the upper levels of a building.

The other roof types mentioned have distinct characteristics. A shed roof features a single slope, which is often used for modern designs or sheds. A flat roof has no slope, leading to potential drainage issues, while a pavilion roof typically consists of four slopes converging at a central point, resembling a pyramid. These differences highlight why the gable roof is the correct answer for a roof that slopes to two sides.