An ellipse can be defined as the locus of points, the sum of whose distances to two fixed points (the foci) is constant. This is the elementary “two pins and a piece of string” construction.
Expressions
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| Locus Eq |  |
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An ellipse can be defined as the locus of points, the sum of whose distances to two fixed points (the foci) is constant. This is the elementary “two pins and a piece of string” construction. Expressions
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