Final answer:
Gable roofs are characterized by having two slopes, which are the two sloping sides that meet at a ridge to form a peak.
Step-by-step explanation:
The question pertains to the architectural features of roofs, specifically the gable roof style. A gable roof is characterized by its triangular shape, which is formed by two sloping sides that come together at a ridge, creating a peak. This design inherently includes two slopes, one on each side. For example, Hatfield House, which showcases English Jacobean architecture with Renaissance motifs, also likely features this style of roofing with two slopes.