Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 30
erect perpen-diculars to the givenlines, and the intersec-tions a and h will bethe centres of the arcscomposing the requiredcurve. To join two givenpoints in ttvo givenparallel lines hy a re-versed curve of twoeq7ial arcs, ivhose cen-tres lie in the p)araUels(Fig. 39). Join the two givenpoints A… … 14 CONSTRUCTIOX OF GEOMETRICAL PROBLEMS. On a given line, to construct a compouiid curve of three arcs of circles, theradii of the two side ones deing equal and of a given length, and their centresin the given line ; the central arc to pass through a given point on the perpen-dicular, bisecting the…
Mechanical drawing
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