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Resources for Mathematics with emphasis on gr10
Updated on Sep 14, 14
Created on Feb 02, 12
Category: Schools & Education
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Peter Schutte's List: Maths Resources -GR10
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A parabola is the locus of a point that moves so that its distances from a fixed line and a fixed point are equal. This is shown on Figure 8.2, where the fixed line is called the directrix and the fixed point F, the focus. Note that the length FR equals the length RD. The line perpendicular to the directrix and passing through the focus F is called the axis of the parabola. The parabola intersects its axis at a point V called the vertex, which is exactly midway between the focus and the directrix.
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