Hexagon
81British Standard Whitworth — (BSW) is one of a number of imperial unit based screw thread standards which use the same bolt heads and nut hexagonal sizes, some others being British Standard Fine thread (BSF) and British Standard Cycle. These three are collectively called… …
82Flexagon — In geometry, flexagons are flat models made from folded strips of paper that can be folded, or flexed , to reveal a number of hidden faces. They are amusing toys but have also caught the interest of mathematicians.Flexagons are usually square or… …
83Wakibiki — are a Japanese armour component that were worn by the samurai class of feudal Japan. Wakibiki are a form of arm pit protector, that along with the manju no wa and manchira were auxiliary forms of armored clothing worn underneath (sometimes over)… …
84Liu Hui's π algorithm — is a mathematical algorithm invented by Liu Hui (fl. 3rd century), a mathematician of Wei Kingdom. Before his time, the ratio of the circumference of a circle to diameter was often taken experimentally as 3 in China, while Zhang Heng (78… …
85Dieter Senghaas — (* 27. August 1940 in Geislingen an der Steige) ist ein deutscher Sozialwissenschaftler und Friedensforscher. Er ist Ehemann der Soziologin Eva Senghaas Knobloch. Inhaltsverzeichnis 1 Biographie 2 Wissenschaftliche Arbeit …
86Jean-Marc Lofficier — Naissance 22 juin 1954 (1954 06 22) (57 ans) Toulon Nationalité  France …
87Hexagone magique — En mathématiques, un hexagone magique d ordre n est un arrangement de nombres formant un gabarit hexagonal centré avec n cellules sur chaque côté. La somme des nombres dans chaque rangée ou dans les trois directions font la même somme. Un… …
88Area of a disk — Part of a series of articles on the mathematical constant π …
89Mediana — Mediana/Medijana Medijana General information Architectural style Roman Villa Location …
90Isotoxal figure — This article is about geometry. For edge transitivity in graph theory, see edge transitive graph. In geometry, a polytope (a polygon, polyhedron or tiling, for example) is isotoxal or edge transitive if its symmetries act transitively on its… …
