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Object with circle, square, and triangle cross sections?

  1. Mar 21, 2004 #1
    does anyone know an object, when viewed from 3 differents views, looks like a circle, a square, and a triangle?
  2. jcsd
  3. Mar 21, 2004 #2
    You could make one.

    Take a cylinder and make a cut at an angle. Make a few more cuts at opportune places. Continue until you get what you want.

  4. Mar 21, 2004 #3


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    It's a paper cup with a circular rim and a straight line bottom. It's circular if viewed from above, a triangle if viewed from, say, the north or south side and square if viewed from the east or west side. Sometimes used to illustrate the Christian notion of the trinity.
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