- 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.
- French Guiana (Wikipedia)
French Guiana (/ɡiˈɑːnə/ or /ɡiˈænə/; French: Guyane, [ɡɥijan]; French Guianese Creole: Lagwiyann or Gwiyann, [la.ɡwi.jãn]) is an overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies. Bordered by Suriname to the west and Brazil to the east and south, French Guiana covers a total area of 84,000 km2 (32,000 sq mi) and a land area of 83,534 km^2 (32,253 sq mi), and is inhabited by 295,385 people.