Octahedron

usgb/ˌɑːktəˈhiːdrən/
noun

A shape with eight flat sides, each side a triangle and each point of the triangle touching one of the six points.

A regular octahedron has six vertices and twelve edges.
Visual representation of "octahedron" - A shape with eight flat sides, each side a triangle and each point of the triangle touching one of the six points.

Often appears as...

  • regular octahedron
  • plural octahedra

Usage tips

Technical

Definition 1 of 2
Visual representation of "octahedron"
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Geometry Usage

Primarily used in geometry to describe a crystal or a solid shape with eight triangular faces.

Illustration for Geometry Usage
A crystal in the shape of an octahedron was used in the experiment.
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Visual Reference

Imagine two pyramids base-to-base to understand an octahedron's structure in 3D.

Illustration for Visual Reference
If you place two pyramids together, you get an octahedron.
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Dice Representation

An octahedron can resemble a standard eight-sided die used in games.

Illustration for Dice Representation
The eight-sided die is basically an octahedron.
Visual representation of the word "Octahedron"

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