What is the main feature of a hip roof?

A hip roof is characterized by its design where all sides slope downwards, typically towards the walls. This feature not only provides a more aesthetically pleasing shape but also offers better stability and resistance to wind compared to roofs that have vertical ends. The uniform slope makes the roof effective at shedding water and snow, which is particularly advantageous in regions with varying weather conditions.

The all-sides sloping feature indeed distinguishes hip roofs from other shapes. Unlike gable roofs that slope on only two sides, the hip roof provides a continuous overhang that can protect the building's walls from weather-related damage. This design aspect also allows for additional architectural elements, such as dormers, to be incorporated, enhancing both functionality and visual appeal.

In contrast, options indicating lack of slope or limited slope on only two sides do not capture the essence of a hip roof and do not align with the definitions or structural characteristics of roofing structures.