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Spin and flip brainteaser

By David, 16 October 2019 Brainteaser

Difficulty: Tricky

I’ve got a square piece of paper, with lines for writing on both sides. Right now, the lines are running up and down the page. To get the lines running left and right, I could rotate the page, but that’s too boring. Can I do it by flipping the page instead?
 

Scroll down or click for a hint, or the answer!

 

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Brainteaser hint

Get a piece of paper and try it yourself – it’s a lot easier than doing it in your head.

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Brainteaser answer

It can be done! Pick up the paper by opposite corners – say, top left and bottom right, and flip it diagonally.

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