Pentahedron

usgb/ˌpentəˈhiːdrən/
noun

A solid shape with five faces or sides.

A pyramid is an example of a pentahedron because it has five faces.
Visual representation of "pentahedron" - A solid shape with five faces or sides.

Often appears as...

  • regular pentahedron
  • irregular pentahedron

Usage tips

Technical

Definition 1 of 1
Visual representation of "pentahedron"
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Not Just Pyramids

While a pyramid is a common pentahedron, not all pentahedra are pyramids. Explore other shapes too.

Illustration for Not Just Pyramids
A triangular prism is also a pentahedron.
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3D Shape Context

'Pentahedron' refers specifically to a 3-dimensional shape, not a flat, 2D polygon.

Illustration for 3D Shape Context
A drawing of a pentahedron on paper is a 2D representation of a 3D object.
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Faces Joining

A pentahedron's faces must join with others along edges to form a closed 3D shape.

Illustration for Faces Joining
Each face of a pentahedron shares its edges with adjacent faces.
Visual representation of the word "Pentahedron"

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