Biaugmented triangular prism

In geometry, the biaugmented triangular prism is one of the Johnson solids (J₅₀). As the name suggests, it can be constructed by augmenting a triangular prism by attaching square pyramids (J₁) to two of its equatorial faces.

A Johnson solid is one of 92 strictly convex polyhedra that have regular faces but are not uniform (that is, they are not Platonic solids, Archimedean solids, prisms or antiprisms). They were named by Norman Johnson, who first listed these polyhedra in 1966.

It is related to the augmented triangular prism (J₄₉) and the triaugmented triangular prism (J₅₁).