Tangents to an Excircle

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A circle drawn outside a triangle that is tangent to the extensions of two of its sides and to the third side is an excircle.
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Contributed by: Jay Warendorff (March 2011)
After work by: Antonio Gutierrez
Open content licensed under CC BY-NC-SA
Snapshots
Details
The statement of the theorem is in Problem 66. Triangle, Excircle, Tangents, Geometric Mean.
Permanent Citation
"Tangents to an Excircle"
http://demonstrations.wolfram.com/TangentsToAnExcircle/
Wolfram Demonstrations Project
Published: March 7 2011