First, the "edge" in mathematics and geometry:

Geometric concept: In geometry, "edge" refers to the edge of a polyhedron. A polyhedron is a three-dimensional figure composed of several planar polygons with a line segment between them, which is called the "edge" of the polyhedron.

Solid geometry: For example, in a cuboid or cube, the line segment of its boundary is called an edge. A cuboid has 12 sides and a cube has 12 equal sides.

Second, the "edge" in architecture:

Architectural structure: In architecture, "edge" refers to the prominent edges or lines in a building or structure. Designers often use edges to create three-dimensional and aesthetic effects of buildings.

Architectural style: Some architectural styles emphasize the architectural features by ridge lines, such as modernism and postmodernism, and often highlight the lines and edges of buildings.

Third, the "edge" in general context:

Describe edges and corners: In daily language, "edge" can also be used to describe the edges or corners of an object, usually to describe its sharp or distinctive features.

Metaphor usage: Sometimes, "edge" is also used as a metaphor to express the distinctive or distinctive features of things, such as "an angular gem" or "an angular point of view in an article".

The word "edge" has different meanings and applications in different fields, but it is usually related to the boundaries, lines or corners of objects. In mathematics, refers to the edge of a polyhedron; In architecture, it is used to describe buildings.

In geometry and architecture, "edge" is the name of solid or polygonal boundary line, which plays an important role in connecting and defining shapes in graphics or building structure. When describing the appearance or characteristics of an object, edges can also be used to describe its sharp edges or obvious lines.