It’s Friday, and you want to give your brain a break for the week, right? Before you put your brain away for the weekend, try this brain teaser. I grant you, this has little to do with technical communication, however you might argue that it is an exercise in looking at things from multiple perspectives. Anyway, give your answer in the comments. First correct answer wins. I don’t know what you win. Respect, maybe. Or something non-tangible like that. Anyway, have a go and see what you come up with.
(Googling is cheating, just so you know. Remember the honor code?)
Hint: Drawing and using a highlighter to mark each triangle is helpful so you can be sure you don’t double-count or miss one.