A curve created by starting with a circle, dividing it into six arcs, and flipping three alternating arcs. The process is then repeated an infinite number of times.
In-and-Out Curve
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Cite this as:
Weisstein, Eric W. "In-and-Out Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/In-and-OutCurve.html