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Content - Focus-directrix definition of the parabola
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![The Parabola [23]. Important and useful definitions / terminology... | Download Scientific Diagram](https://www.researchgate.net/publication/336511709/figure/fig1/AS:813804552196098@1571037533169/The-Parabola-23-Important-and-useful-definitions-terminology-related-to-Parabolic.png "The Parabola [23]. Important and useful definitions / terminology... | Download Scientific Diagram")
The Parabola [23]. Important and useful definitions / terminology... | Download Scientific Diagram
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Content - Focus-directrix definition of the parabola
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