Four square (also called downball, handball, four squares or box ball) is a global sport played on a square court divided by two perpendicular lines into...

Look up four square or foursquare in Wiktionary, the free dictionary. Four square is a ball game. Four square may also refer to: Foursquare City Guide...

Lagrange's four-square theorem, also known as Bachet's conjecture, states that every natural number can be represented as a sum of four non-negative integer...

The four-square cipher is a manual symmetric encryption technique. It was invented by the French cryptographer Felix Delastelle. The technique encrypts...

The Square Four is a motorcycle produced by Ariel between 1931 and 1959, designed by Edward Turner, who devised the Square Four engine in 1928. At this...

Euler's four-square identity says that the product of two numbers, each of which is a sum of four squares, is itself a sum of four squares. For any pair...

Four Square is a chain of supermarkets in New Zealand that was founded by John Heaton Barker. It has 230 stores throughout New Zealand, mostly in small...

In Euclidean geometry, a square is a regular quadrilateral, which means that it has four sides of equal length and four equal angles (90-degree angles...

The American Foursquare or American Four Square (American 4 Square) is an American house vernacular under the Arts and Crafts style popular from the mid-1890s...

College Square. All were set up to gather intelligence on the Provisional Irish Republican Army (IRA) and Irish nationalist movement. A Four Square van visited...