>an estimated 70 percent of viral capsids known to date are icosahedral, shaped like tiny soccer balls.
Soccer balls are not icosahedra. The archetypal soccer ball is a truncated icosahedron: https://en.wikipedia.org/wiki/Truncated_icosahedron
Soccer balls are not icosahedra. The archetypal soccer ball is a truncated icosahedron: https://en.wikipedia.org/wiki/Truncated_icosahedron
This was such a delightful realization I felt the need to comment anyway.
Truncated dodecahedra are made from twelve 10-gon and twenty triangular faces. Truncated icosahedra are made from twenty hexagonal and twelve pentagonal faces.