Construction Of A Hyperbola

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An illustration showing how to construct a hyperbola by plotting. “Having given the transverse axis BC, vertexes Aa, and foci ff’. Set off any desired number of parts on the axis below the focus, and number them 1,2,3,4,,5,etc. Take the distance a1 as radius, and, with f’ as center, strike the cross 1 with f’1=a1. With the distance A1, and the focus f as center, strike the cross 1 with the radius F1=A1, and the cross 1 is a point in the hyperbola.”


Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 37


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