Pythagoras' theorem can also be used to solve 3D problems. You often need to use Pythagoras' theorem more than once in each problem as we create extra right-angled triangles in the 3D shapes. First ...

The Penrose Triangle is as elegant as it is impossible—much like M.C. Escher’s drawings, it presents a two-dimensional illusion that the eye interprets as three-dimensional. The task of effectively ...

DURHAM, North Carolina (WTVD) -- The Helping Hands Project has spread to universities and colleges across the Triangle. Students use 3D printers to make prosthetic hands for children who need them.

Using data and imagery from a 3-D scanner, the 3-D printer produces replicas of crashed cars. The finished product allows investigators to examine the scaled-down car from all angles in the palm of ...