A geometry problem over a century old has just found its definitive answer. Mathematicians have confirmed that the solution ...

Online game Change Square has simple rules and primitive design. The player simply has to click on the screen until the square is the same color as the ball. The ball moves inside the square. Have ...

the English author and mathematician Henry Ernest Dudeney posed a puzzle: Can any equilateral triangle be cut into as few pieces as possible that will fit together to form a perfect square?