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I Equilateral Ellipse

  1. Jan 2, 2017 #1
    I did and exam a while ago and one of the questions asked to find a formula for an "equilateral ellipse". In my mind an equilateral ellipse should be a circle, but it seems I am wrong.

    I searched online for the term, but didn't find anything useful. Does anyone know what it is, can find a formula and give me some references?

  2. jcsd
  3. Jan 2, 2017 #2


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  4. Jan 2, 2017 #3


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  5. Jan 3, 2017 #4
    Thanks Mark. I found the term in some old books as well and they also state that a circle can be called an "equilateral ellipse".
  6. Jan 3, 2017 #5


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