## CabriJava demonstration of the Three Tangents Theorem |

The Three Tangents Theorem states that, if the tangents at A, B and C on a conic meet in D, E and F, as shown, then AD, BE and CF are concurrent |

You may move any of the points A,B,C *on the conic*

or change the shape of the conic by moving the unlabelled points.

You will see that AD, BE and CF remain concurrent.

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