In mathematics, edges are often used to calculate the surface area and volume of three-dimensional graphics. For example, a cube has six faces and 12 sides. Its surface area can be obtained by calculating the area of each surface and adding it up, while its volume can be obtained by calculating the bottom area and multiplying it by the height.
In addition, edges can also be used to solve some geometric problems, such as finding the included angle between two planes or finding the shortest path connecting two points.
In a word, as an important geometric concept, edge is widely used in different fields, including architectural design, mechanical engineering, computer graphics and so on.