 Great triakis icosahedron

The Great Triakis Icosahedron is a type of convex polyhedron and one of the Archimedean solids. It can be understood as an augmentation of the regular icosahedron, where each triangular face of the icosahedron is subdivided into smaller triangles. Specifically, each face of the icosahedron is divided into three smaller triangles, with an added pyramid atop each of these newly created triangular faces.