American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 33
on the line A B as centres, and withC D as radius, describe two arcs above the line A B. Draw a lineE F tangential to, or touching the arcs. E F will be the requiredparallel. Prob. 12. — To construct an oblong having two of its sides AB andC D given. Make E F equal to A B, and erect a perpendicular… … Prob. 13. — To construct an oblong, its diagonal A B and one sideC D being given. Draw A B in any position, above the given line. Bisect it in 1 ;with 1 as centre, 1 A as radius, describe a circle; with A as centre,C D as radius, cut the circle in E ; and with B as centre, sameradius, cut the…
Geometrical drawing
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