MAKE A MEME View Large Image Parabola focus directrix.svg en Parabola showing relation between the focus directrix and a point on the curve Own Pirateer 2009-03-28 Parabola_showing_focus_and_reflective_property png Parabolas
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Keywords: Parabola focus directrix.svg en Parabola showing relation between the focus directrix and a point on the curve Own Pirateer 2009-03-28 Parabola_showing_focus_and_reflective_property png Parabolas
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