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Find a center of circle given a point and radius

  1. Feb 3, 2012 #1
    Hi all,

    How do I find the center of a circle given a point (tangent to the circle) and the radius.

  2. jcsd
  3. Feb 3, 2012 #2
    What does that mean? Any point on a tangent or the point of contact of tangent and circle?
  4. Feb 3, 2012 #3
    This problem does not have a single solution, instead, the solution of where the center of the circle could be is a circle in itself; in other words, the locus of the solution is a circle with center at the point given.
  5. Feb 3, 2012 #4


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    Gold Member

    A point cannot be tangent to a circle, so it's not clear what you are talking about
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