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Spiral

A spiral is a curve which turns around some central point, getting progressively closer to or farther from it (depending on which way you follow the curve). In polar coordinates, then, r is an monotonic function of θ.

Some of the more important sorts of spirals include:



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Spiral

... Some of the more important sorts of spirals include: The Archimedean spiral - r = a + bθ The Hyperbolic spiral - r = a/θ The Logarithmic spiral - ...