Friday Brain teaser: Triangles


It’s Friday, more about and you want to give your brain a break for the week, dosage right? Before you put your brain away for the weekend, buy 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?)

How many triangles can you find in the following diagram?

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.

Updated 6/16/2010 – Here is the answer:

IP info: I created the image myself in Illustrator and the animation movie in Photoshop. Here is the license for both the image and the movie answer: Creative Commons License

(Triangle Image by Technically Speaking is licensed under a Creative Commons Attribution-Share Alike 3.0 United States License.)



6 responses to “Friday Brain teaser: Triangles”

  1. Hi, I’m very interested in Linux but Im a Super Newbie and I’m having trouble deciding on the right distribution for me (Havent you heard this a million times?) anyway here is my problem, I need a distribution that can switch between reading and writing in English and Japanese (Japanese Language Support) with out restarting the operating system.

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