Researchers have demonstrated, using a novel approach, that the original solution to Dudeney’s famous dissection problem is indeed the optimal one. In 1907, English author and mathematician Henry Erne ...

In 1907, the English author and mathematician Henry Ernest Dudeney posed a puzzle: Can any equilateral triangle be cut into ...

That's why they're so much fun (and so tricky!) to solve. This triangle puzzle is all about seeing triangles ... inside ...

Henry Ernest Dudeney posed the famous dissection problem of transforming a triangle into a square by cutting it into as few pieces as possible. In a new study, researchers have finally proved that the ...

What it means is that in a right triangle (where one angle equals 90°), the sum of the squares of two sides equals the square of the hypotenuse (the longest side).