Two Tangent Theorem: Difference between revisions
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From a simple application of the [[Power of a Point Theorem]], the result follows. | From a simple application of the [[Power of a Point Theorem]], the result follows. | ||
==See Also== | |||
[[Category:Geometry]] | [[Category:Geometry]] | ||
[[Category: Theorems]] | |||
Revision as of 11:28, 9 April 2019
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. <geogebra>4f007f927909b27106388aa6339add09df6868c6</geogebra>
Proofs
Proof 1
Since 
and 
are both right triangles with two equal sides, the third sides are both equal.
Proof 2
From a simple application of the Power of a Point Theorem, the result follows.
