Mathematicians struggled to find the fewest number of pieces needed to cut an equilateral triangle and rearrange it into a ...

Now, more than 122 years after it was first proposed, Kamata and two other mathematicians have finally proved that a solution ...

In the middle of the TV is an upside-down pink triangle crossed out by a red "no" symbol. The pink triangle was used as a badge to identify gay men in concentration camps, and many received ...

Russia has hit on an "offensive triangle" of tactics that are forcing Ukraine to lose ground. The key to reviving Russian airpower has been a surprisingly low-tech weapon: glide bombs. Glide bombs ...