American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 89
two parallel chords, and bisect them; draw a linethrough the points of bisection, terminating at each end in thecir-cumference, as 1 2. Bisect this line in A, and A is the centre ofthe ellipse. With centre A, and with any radius, describe an arc,cutting the ellipse in three places, as 3, 4, 5; draw…
Geometrical drawing
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