Similar Point : Given two circles, construction their outer and inner tangent lines.Then the outer similar point P is the intersection of outer common tangents of two circles.

 
  • 相似點(diǎn):給定兩圓,作兩圓之外公切線(xiàn)及內公切線(xiàn),則兩外公切線(xiàn)的交點(diǎn)P為"外相似點(diǎn)";
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