2 circles touch one another externally @ point A.

A straight line through A meets one of the circles @ T and the other @ S.

Prove that the tangent to the 1st circle is parallel to the tangent to the 2nd circle @ S.

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- Aug 21st 2010, 05:15 AMthe undertakercircle geomtry III
2 circles touch one another externally @ point A.

A straight line through A meets one of the circles @ T and the other @ S.

Prove that the tangent to the 1st circle is parallel to the tangent to the 2nd circle @ S. - Aug 21st 2010, 07:55 AMmathaddict