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 ...

We spent forever arguing about the brain teaser that asks: How many triangles do you see? Here, mathematicians reveal the real answer. See if you’re right.

Unlike the viral “problem,” this puzzle did not hinge on misleading notation. In fact, there’s no notation at all, just a diagram and a question: How many triangles are formed by these six ...

Yet another viral math equation is taking over the internet. This time, it's a pink triangle within a square that has people scratching their heads. Can you solve it?

Lens can also be leveraged by users to take a photo of geometry triangle problems, solving the challenge of trying to put primarily visual problems into words.

A new proof breaks a decades-long drought of progress on the problem of estimating the size of triangles created by cramming points into a square.

Mathematicians have resolved the first one trillion cases of an ancient mathematics problem. The advance was made possible by a clever new computational technique for multiplying large numbers ...