To determine conic c

The previous remark implies the correctness of the construction of the tangent points E, G from the given data. By moving P on c

To prove this one can use the theorem of Hart (see Hart_Lemma.html ). This theorem is usually applied to prove geometrically

Note that the conic c

Poncelet_Proof.html

Poncelet.html

Quadratic_Transformation.html

Tangent_Cuts_Circle.html

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