# 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