Two Tangent Theorem

Revision as of 19:40, 8 March 2009 by Solafidefarms (talk | contribs) (add Power of Point)

The two tangent theorem states that given a circle, if P is any point lying outside the circle, and if A and B are points such that PA and PB are tangent to the circle, then PA = PB.

It follows from Power of a Point trivially, or we can use similar triangles, given that tangents to a circle form a right angle to the radius to the point of tangency.

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