## delta curveThe delta curve is a curve that can be turned inside an equilateral triangle while continuously making contact with all three sides. There are an infinite number of delta curves, but the simplest are the circle and lens-shaped delta-biangle. All the delta curves of
height h have the same perimeter, 2πh/3. ## Related entries• Reuleaux triangle• rotor ## Related category• PLANE CURVES | |||||

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