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Triakis tetrahedron
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In geometry, a triakis tetrahedron is a Catalan solid with 12 faces. Each Catalan solid is the dual of an Archimedean solid. The dual of the triakis tetrahedron is the truncated tetrahedron.
Image: Triakistetrahedron
Image: Triakistetrahedron
Image: Triakistetrahedron
Image: Triakistetrahedron
Catalan solid
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In mathematics, a Catalan solid, or Archimedean dual, is a polyhedron that is dual to an Archimedean solid. There are 13 Catalan solids. They are named after the Belgian mathematician Eugène Catalan, who first described them in 1865.
Image: Triakistetrahedron
Image: Triakistetrahedron
Image: Triakisoctahedron
Image: Triakisoctahedron
Image: Disdyakisdodecahedron
Image: Disdyakisdodecahedron
Image: Triakisicosahedron
Image: Triakisicosahedron