Approximate Ellipse with Five Centered Arc
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“This (five centered arc) method is based on the principle that the radius of curvature at the end of the minor axis is the third proportional to the semi-minor and semi-major axes, and similarly at the end of the major axis is the third proportional to the semi-major and semi-minor axes. The intermediate radius found is the mean proportional between these two radii.” —French, 1911
Keywords
ellipse, ellipses, Approximate Ellipse with Four Centers, Approximate Ellipse with 4 Centers, approximate ellipse 4 centersGalleries
Geometric ConstructionsSource
French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)
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