Twenty equilateral triangles, symmetrical polyhedron.

Soccer ball-shaped geometric figure.

(geometry) One of four Kepler-Poinsot polyhedra with Schläfli symbol {3,5⁄2}.

In geometry, the triakis icosahedron is an Archimedean dual solid, or a Catalan solid, with 60 isosceles triangle faces.

In geometry, the complete or final stellation of the icosahedron is the outermost stellation of the icosahedron, and is "complete" and "final" because it includes all of the cells in the icosahedron's stellation diagram.