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Adding local short description: "Mathematically-calculated curve in which a straight section changes into a curve", overriding Wikidata description "increasing degree of curvature" (Shortdesc helper) |
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{{Short description|Mathematically-calculated curve in which a straight section changes into a curve}}
[[Image:Easement curve.svg|thumb|The red [[Euler spiral]] is an example of an easement curve between a blue straight line and a circular arc, shown in green.]]
[[File:CornuSpiralAnimation.gif|thumb|Animation depicting evolution of a [[Cornu spiral]] with the tangential circle with the same radius of curvature as at its tip, also known as an [[osculating circle]] (click on thumbnail to observe).]]
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