Can You Solve This Paper Puzzle? - Neatorama

Ed Barbeau, a retired math professor at the University of Toronto, made this object from a single rectangular piece of paper. Can you figure out how he did it? Check the solution at the link.

Link -via Boing Boing | Professor's Website

It's a neat trick. Seems so obvious once you know the answer. Solution is here:

http://www.futilitycloset.com/2011/11/12/cut-and-thrust/

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Three straight cuts and then fold it...

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anyone else loving that snorgtee's "meh" ad?

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O.o

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Holy crap, I remember way back when Mr. Wizard showed me this trick! I thought I'd never see it again!

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Took me a it to work out, but I smiled when I did.

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Haven't seen it for several years, but it's pretty simple. It's all in the presentation, of course. One of those thinking outside of the box things.

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I glanced at this and instantly saw what was going on, and was a little confused why this was even "a puzzle". As I looked at it longer, I saw how it could be confusing to people, though.

I guess I've just always been really good at spacial thinking.

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He cut across the fold. Wow, that was hard. I are a math professor?

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I know how he did it! He cut it and folded it!

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I don't understand how this is a puzzle. Am I missing something?

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This isn't really that amazing. No offense but it reminds me of the Seinfeld episode when Elaine stops having sex and is amazed by a tire display.

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@Pile of Pooh. Cut across the fold? No he didn't. When he cut it there was no fold. And not only do the cuts not cross the fold, but the fold doesn't cross the cuts. So clearly you are not a math professor. Indeed, like Pooh, you would seem to have very little brain.

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