# Triakis icosahedron

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Triakis icosahedron

A triakis icosahedron is an Archimedean dual solid, or a Catalan solid. Its dual is the truncated dodecahedron.

It can be seen as an icosahedron with triangular pyramids augmented to each face. This interpretation is expressed in the name.

This interpretation can also associated with other similar nonconvex polyhedra with pyramids of different heights:
# (Sometimes called a triakis icosahedron)
# (With very tall pyramids)
# (With inverted pyramids)

* Triakis triangular tiling for other "triakis" polyhedral forms.

References

* (Section 3-9)
*

*
* [http://polyhedra.org/poly/show/40/triakis_icosahedron Triakis Icosahedron] -- Interactive Polyhedron Model

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