n Learning and Teaching Mathematics - Circle mania

Volume 2013, Issue 15
  • ISSN : 1990-6811


We have all no doubt come across the traditional analytical geometry question of proving that two circles either (a) touch one another, (b) intersect one another, or (c) don't intersect one another. A typical approach to this question is simply to compare the sum of the radii to the distance between the centres of the two circles.

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