Exactly how many triangles can you count in this fun triangle puzzle?

Counting will get you nowhere. Try a little combinatorics instead. By Kenneth Chang A couple of weeks ago, I wrote about a viral math problem — 8÷2(2+2) = ? — that drew the disdain of many ...

Periodically during tax season a meme goes around saying something like this: I sure am glad we studied triangles every time triangle season comes around. The implication here is that we never need ...