What term is used to describe the outer edge of a sloped surface?

The term that accurately describes the outer edge of a sloped surface is known as "slope." This term indicates the inclination or gradient of a surface in reference to a horizontal plane. It is commonly used in various fields, including grading and stormwater management, where understanding the slope is crucial for directing water flow and ensuring proper drainage.

In contrast, "grade" often refers to the specific measurement of the slope itself, which can express the steepness or angle of inclination in the context of topographical changes. "Angle" generally pertains to the degree of inclination between two intersecting lines or planes, rather than the surface itself. "Elevation" describes the height of a point in relation to a reference level, typically sea level, and does not specifically refer to the outer edge.

Understanding these distinctions helps clarify the terminology used when discussing graded surfaces and ensures effective communication in related projects.