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Video Definition 36--3D Geometry--Octahedron

Octahedron

Topic

3D Geometry

Definition

An octahedron is a three-dimensional shape with eight flat triangular faces.

Description

The octahedron is one of the five Platonic solids, known for its eight equilateral triangular faces. It is a highly symmetrical shape, often studied in geometry for its aesthetic and mathematical properties. Octahedrons are used in various fields, including architecture and art, to create visually appealing structures. In mathematics, they are important for understanding the properties of regular polyhedra and their role in spatial reasoning. In math education, octahedrons help students explore the concept of symmetry and the relationship between different polyhedral shapes. For example, Euler's formula 

V − E + F = 2

can be applied to the octahedron, where V V is the number of vertices, E is the number of edges, and F is the number of faces.

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