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2. Napkin holder - Wikipedia

   en.wikipedia.org/wiki/Napkin_holder

   In vertical napkin holders, the surfaces tend to be the same size and, often, shape, making the napkin holders symmetrical. [ 2 ] [ 6 ] In vertical holders that sandwich, however, the bottom is usually around the size of a conventional paper napkin, about 7.25 inches (184 mm) by 7.75 inches (197 mm) [ 5 ] while the top side can be any virtually ...

3. Napkin folding - Wikipedia

   en.wikipedia.org/wiki/Napkin_folding

   Napkin folding is a type of decorative folding done with a napkin. It can be done as art or as a hobby. Napkin folding is most commonly encountered as a table decoration in fancy restaurants. [1] Typically, and for best results, a clean, pressed, and starched square cloth (linen or cotton) napkin is used. [2]

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. Napkin ring problem - Wikipedia

   en.wikipedia.org/wiki/Napkin_ring_problem

   Reprint of 1935 edition. A problem on page 101 describes the shape formed by a sphere with a cylinder removed as a "napkin ring" and asks for a proof that the volume is the same as that of a sphere with diameter equal to the length of the hole. Pólya, George (1990), Mathematics and Plausible Reasoning, Vol.

6. Napkin - Wikipedia

   en.wikipedia.org/wiki/Napkin

   A folded napkin. Conventionally, the napkin is folded and placed to the left of the place setting, outside the outermost fork. In a restaurant setting or a caterer's hall, it may be folded into more elaborate shapes and displayed on the empty plate. Origami techniques can be used to create a three-dimensional design.

7. Marble (toy) - Wikipedia

   en.wikipedia.org/wiki/Marble_(toy)

   A "grandfather" is the largest marble, the size of a billiards ball or tennis ball. Various names for different marble types (regional playground talk, Leicester, UK): Marleys (marbles), prit (white marble), Kong (large marble), King Kong (larger than a bosser), steely (metal bearing-ball). Names can be combined: e.g. prit-Kong (large white ...