American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 22
the arc in 1and 2 ■ from 1 draw a right line to 2, and it will bisect A B in C. Prob. 1. — To bisect an arc of a circle.Same method as in previous exercise. Prob. 2. — At point C in a given line A B to draw a line perpen-dicular to it. With C as centre, and any radius, cut the line A B in points 1… … Prob. 3. — From any point C outside and opposite a given line AB to draw a line perpendicular to A B. With C as centre, and any radius that will cut A B, describe anarc intersecting; A B in points 1 and 2. With 1 and 2 as centres,and any radius greater than half 1 2, describe arcs intersecting in…
Geometrical drawing
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