icosahedron

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An icosahedron is a polyhedron with twenty triangular faces, and it has twelve vertices and fifteen edges. It can be described as a Platonic solid, being one of the five regular polygon-based solids. It is a popular shape in geometry and has applications in fields like architecture and engineering. Notably, an icosahedron is also the shape of a soccer ball when it is inflated to form a geodesic dome.