Approach this like a math puzzle —strategically and methodically. With each row containing six triangles, and a systematic count (from left to right and top to bottom), most people on the internet ...

A tricky brainteaser has left some Reddit users scratching their heads. In a post uploaded this week, a user posted an image of a diagnal and horizontal line combinatorics. One of the basic problems ...

There’s nothing quite like a maddening math problem, mind-bending optical illusion, or twisty logic puzzle to halt all productivity in the Popular Mechanics office. We’re curious people by nature, but ...

To solve problems involving non-right-angled triangles, the correct rule must first be chosen. The cosine rule can be used in any triangle to calculate: a side when two sides and the angle in between ...