6 (number)

natural number

In geometry, a hexagon (from Greek , , meaning "six", and , , meaning "corner, angle") is a six-sided polygon. The total of the internal angles of any simple (non-self-intersecting) hexagon is 720°.

A hexahedron (: hexahedra or hexahedrons) or sexahedron (: sexahedra or sexahedrons) is any polyhedron with six faces. A cube, for example, is a regular hexahedron with all its faces square, and three squares around each vertex.

[[File:Regular_hexagon_as_intersection_of_two_triangles.png|thumb|A regular hexagram, [[List_of_regular_polytopes_and_compounds#Two_dimensional_compounds|{6}[2{3}]{6}]], can be seen as a compound composed of an upwards (blue here) and downwards (pink) facing equilateral triangle, with their intersection as a regular hexagon (in green).]]

A senary () numeral system (also known as base-6, heximal, or seximal) has six as its base. It has been adopted independently by a small number of cultures. Like the decimal base 10, the base is a semiprime, though it is unique as the product of the only two consecutive numbers that are both prime (2 and 3). As six is a superior highly composite number, many of the arguments made in favor of the duodecimal system also apply to the senary system.

theory of inter-connectedness of all people

federation of six cities in Asia Minor founded by Dorians

diplomatic definition for the six eastern provinces of the Ottoman Empire with a sizeable Armenian population

The Hexateuch ("six scrolls") is the first six books of the Hebrew Bible: the Torah (Pentateuch) and the book of Joshua.

1922 trial in Greece

thumb|right|250px|Representation of the six days of creation.

proposed U.S. grade insignia for generals of the armies of the United States

space with six dimensions

sixth and current phase in the development of electoral politics in the United States, 1980–