If you’re not sure how to wrap a present, there’s an easy hack you can try. The clever trick—wrap diagonally, not horizontally or vertically—is based in math. Basic geometric principles explain how it ...

STATEN ISLAND, N.Y. -- Just in time for the holiday season, a diagonal gift wrapping hack has gone viral. The hack is particularly useful if you often cut paper too short to wrap a gift. Instead of ...

Just in time for the holidays, the diagonal gift wrap hack has gone viral. It’s age-old wisdom in some circles—a graduate student even wrote a paper about the math of the perfect gift wrap in 2007, ...