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Can you draw something on a piece of paper that looks like a square and a circle at the same time? ( without using Math or 3-d visualisation techniques)

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closed as too broad by Xynariz, klm123, Joe Z., Aza Sep 23 '14 at 6:54

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ How about this one petapixel.com/assets/uploads/2011/08/circles.jpg $\endgroup$ – Hubble07 Sep 17 '14 at 6:46
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    $\begingroup$ If you use the Chebyshev norm on $\mathbb{R}^2$ rather than the Euclidean one, then circles are squares. $\endgroup$ – Julia Hayward Sep 17 '14 at 9:18
  • $\begingroup$ First guess: draw a squircle. Second guess: the answer to the question is "no, such a task is impossible" $\endgroup$ – Kevin Sep 17 '14 at 12:06
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You can draw a cylinder, which (a real 3D object, not the 2D drawing) can look like a square and like a circle, depending on how you turn it.enter image description here.

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    $\begingroup$ nice Also you can cut that cylinder into a shape which can give a triangle as the third projection. $\endgroup$ – Hubble07 Sep 17 '14 at 13:43
  • $\begingroup$ The problem however, is that if you draw it on a piece of paper, you only have the one perspective. $\endgroup$ – Tim Couwelier Sep 18 '14 at 6:49
  • $\begingroup$ @TimCouwelier, if you draw an elephant on a post mark, does it become a small animal? $\endgroup$ – klm123 Sep 18 '14 at 7:06
  • $\begingroup$ No, it becomes a small drawing of the animal. $\endgroup$ – Tim Couwelier Sep 18 '14 at 7:20
  • $\begingroup$ @TimCouwelier similarly cylinder does not lose other perspectives if you draw only one. $\endgroup$ – klm123 Sep 18 '14 at 7:57
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Here is one possible answer ( like Marylin Vos Savant said try to find many possible useful answers to one problem ) ;just draw a circle on a piece of paper , it 'looks' like a circle , it also looks like a 'zero' which is a square integer....

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Here is an edge-view picture of a square or a circle: |

It looks like both at once, or indeed like any other planar polygon viewed edge-on. It is fairly easy to draw, using a pencil, ruler, and piece of paper.

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