- Paulo Coelho (Wikipedia)
Paulo Coelho de Souza (/ˈkwɛl.juː, kuˈɛl.juː, -joʊ/ KWEL-yoo, koo-EL-yoo, -yoh, Portuguese: [ˈpawlu kuˈeʎu]; born 24 August 1947) is a Brazilian lyricist and novelist and a member of the Brazilian Academy of Letters since 2002. His novel The Alchemist became an international best-seller and he has published 30 more books since then.
- Archimedean solid (Wikipedia)
In geometry, an Archimedean solid is one of 13 convex polyhedra whose faces are regular polygons and whose vertices are all symmetric to each other. They were first enumerated by Archimedes. They belong to the class of convex uniform polyhedra, the convex polyhedra with regular faces and symmetric vertices, which is divided into the Archimedean solids, the five Platonic solids (each with only one type of polygon face), and the two infinite families of prisms and antiprisms. The pseudorhombicuboctahedron is an extra polyhedron with regular faces and congruent vertices, but it is not generally counted as an Archimedean solid because it is not vertex-transitive. An even larger class than the convex uniform polyhedra is the Johnson solids, whose regular polygonal faces do not need to meet in identical vertices.