spiral: Quick Facts

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Ionic architectural order

spiral of Archimedes

logarithmic spiral

chambered nautilus shell

Figure 22: Family of curves derived from rm = amΘ. (A) Spiral of Archimedes; (B) Fermat's spiral; (C) hyperbolic spiral; (D) lituus.

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Topics

Spiral of Archimedes logarithmic spiral Fermat’s spiral curve conic section catenary Lissajous figure rhumb line involute brachistochrone orthogonal trajectory curvature tangent slope