File:Parabola-vertice-direttrice.png
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[edit]DescriptionParabola-vertice-direttrice.png |
Italiano: Costruire la parabola, dati due punti A, B e l'asse di simmetria a
https://isawi.blogspot.com/2024/01/blog-post_26.html il procedimento geometrico per determinare il vertice e la direttrice di una parabola delta, dato l'asse di simmetria e due punti A B su delta: 1. Dati due punti A e B sulla parabola e l'asse di simmetria a, traccia una linea perpendicolare e una tangente a un punto della parabola. 2. Costruisci una circonferenza che passa per tre punti: i due punti di intersezione dell'asse a** con la tangente e la perpendicolare. Il centro di questa circonferenza è il fuoco F della parabola. 3. Con centro in A, costruisci una seconda circonferenza che passa per F. 4. La linea tangente a questa seconda circonferenza e perpendicolare all'asse a è la direttrice della parabola. |
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Source | Own work |
Author | Hasanisawi |
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