Arbitrary Curves of Constant Width
Arbitrary Curves of Constant Width
Both the circle and the Reuleaux triangle are examples of curves of constant width. Such curves, if fitted into a square, can rotate in constant contact with all four sides. Any triangle can serve as a template for a curve of constant width by putting three pairs of arcs of circles around it, centered at each of the three vertices, as shown by this Demonstration.
Barbier's theorem[1] proves that a curve with constant width 1 has a perimeter of π.
References
References
External Links
External Links
Permanent Citation
Permanent Citation
Ed Pegg Jr
"Arbitrary Curves of Constant Width"
http://demonstrations.wolfram.com/ArbitraryCurvesOfConstantWidth/
Wolfram Demonstrations Project
Published: January 15, 2013