Mark the 90° right angles in the bottom left and top right corners. You can split a rectangle into 2 right-angled triangles. Image caption, STEP 2: Use the compass to draw a circle. Put a dot ...

Just one percent of people can answer this tricky brainteaser, which also stumped people on the hit ITV quiz show 1% Club, hosted by comedian Lee Mack ...

University of Michigan researchers showed how mechanical neural networks—the black lattices of triangles—could be trained to solve problems.