Circle theorems are properties that are true for all circles, regardless of their size. There are six theorems to learn and recognise. Questions can have a combination of theorems. It is important to ...

Here's what the hairiest problem in math can teach us about wind, antennas and nuclear fusion. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

You might be surprised to learn that you can’t comb the hairs flat on a coconut without creating a cowlick. Perhaps even more surprising, this silly claim with an even sillier name, the “hairy ball ...