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  2. Moneygami - Wikipedia

    en.wikipedia.org/wiki/Moneygami

    The name alludes to traditional origami, which is the Japanese art of folding flat materials, generally paper, into figures resembling various objects. Other examples of moneygami include folding bills into clothing-like bits, such as dollar bills becoming bowties. [1]

  3. Blind bill folding - Wikipedia

    en.wikipedia.org/wiki/Blind_bill_folding

    Fold $10 bills by width. Fold $20 bills lengthwise and then by width. Or you can fold them just lengthwise and put them in a separate section of your wallet. [2] [3] Unlike the banknotes of most countries, all denominations of United States paper money are the same size, preventing the visually impaired from identifying bills by feel.

  4. Napkin folding problem - Wikipedia

    en.wikipedia.org/wiki/Napkin_folding_problem

    The napkin folding problem is a problem in geometry and the mathematics of paper folding that explores whether folding a square or a rectangular napkin can increase its perimeter. The problem is known under several names, including the Margulis napkin problem , suggesting it is due to Grigory Margulis , and the Arnold's rouble problem referring ...

  5. Mathematics of paper folding - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_paper_folding

    The fold-and-cut problem asks what shapes can be obtained by folding a piece of paper flat, and making a single straight complete cut. The solution, known as the fold-and-cut theorem, states that any shape with straight sides can be obtained. A practical problem is how to fold a map so that it may be manipulated with minimal effort or movements.

  6. Geometric Origami - Wikipedia

    en.wikipedia.org/wiki/Geometric_Origami

    Geometric Origami is a book on the mathematics of paper folding, focusing on the ability to simulate and extend classical straightedge and compass constructions using origami. It was written by Austrian mathematician Robert Geretschläger [ de ] and published by Arbelos Publishing (Shipley, UK) in 2008.

  7. Foldforming - Wikipedia

    en.wikipedia.org/wiki/Foldforming

    The most common shapes created using foldforming are flowers, leaves or horns of a ram, as these require the repeated process of folding, annealing, unfolding, and hammering of sheet metal that foldforming also involves. The process of a flower unfolding or how a leaf forms is similar between natural occurrences and foldforming.

  8. 50 Inventions From The Past That Were Amazingly Innovative - AOL

    www.aol.com/98-historical-inventions-were-ahead...

    When you think of a vending machine, things like snacks, sodas, or even pharmaceutical supplies may come to mind. But you might be surprised to know that the first ever vending machine actually ...

  9. Fold-and-cut theorem - Wikipedia

    en.wikipedia.org/wiki/Fold-and-cut_theorem

    The fold-and-cut theorem states that any shape with straight sides can be cut from a single (idealized) sheet of paper by folding it flat and making a single straight complete cut. [1] Such shapes include polygons, which may be concave, shapes with holes, and collections of such shapes (i.e. the regions need not be connected).