Princeton Review

Display Title

Video Definition 11--3D Geometry--Edge

Edge

Topic

3D Geometry

Definition

An edge is a line segment where two faces of a 3D shape meet.

Description

Edges are fundamental components of three-dimensional shapes, representing the boundaries where two faces intersect. They are crucial in defining the structure of polyhedra and other geometric solids. Understanding edges is essential for calculating properties like surface area and volume, as they help define the shape's dimensions. In real-world applications, edges are significant in engineering and architecture, where precise measurements are required for constructing stable structures. In math education, studying edges helps students visualize and understand the construction of 3D shapes, enhancing their spatial reasoning skills. For example, a cube has 12 edges, which are all equal in length, contributing to its symmetry and regularity.

Edge
Edges tend to be sharp and are used with certain tools.

For a complete collection of terms related to 3D Geometry click on this link: 3D Geometry Video Collection.

Common Core Standards CCSS.MATH.CONTENT.5.MD.C.3, CCSS.MATH.CONTENT.7.G.A.3
Duration 1 minutes
Grade Range 4 - 6
Curriculum Nodes Geometry
    • 3D Geometry
        • 3-Dimensional Figures
Copyright Year 2024
Keywords three-dimensional geometry, 3d Geometry, defnitions, glossary term