Question
Wed February 20, 2013 By:

two circle touch each other externally . so they have _______ common tangents

Expert Reply
Wed February 20, 2013
Two circles touching each other externally have 3 common tangent. One, which passes through the touching point, and the other 2 tangents are which touch both the circles at a point located on the top and bottom of both the circles. 
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