The Growing Triangle puzzle gives people two moves to make four triangles from these matches. ... To solve this problem you have to think in 3D instead of seeing them as flat shapes. 4.

The puzzle, which comes from a new book by London-based Alex Bellos, requires you to transform two triangles made from six matches into four triangles, by moving just two matches.

It looks like someone’s discovered an interesting resale use for destroyed antiques: 3D puzzles. Though almost certainly a fake (would that real Ming Vases break into such neat pieces), the ...

In graph theory, a graph is a network of lines, called edges, and points where they meet, called vertices. Century-old math puzzle. After 122 years, a team of mathematicians has finally solved the ...

A series of mind-boggling puzzles have been sweeping the web - but the latest might be the toughest yet. The tricky test features three main images - two triangles and a hexagon.

Henry Dudeney, a self-taught English mathematician and puzzle columnist, asked his readers to dissect an equilateral triangle into the smallest number of pieces that could be rearranged into a square.