Builder's architectural drawing self-taught : containing descriptions of drawing instruments and accessories, with rules for using them, and hints as to their care and management ... (1903)
Hodgson, Fred. T. (Frederick Thomas), 1836-1919 · Chicago : F.J. Drake & Co. · leaf 166
simple curves may be definedas those that are described from one center,as Fig. 122, or by a continuous motion, as theellipse, parabola, hyperbola, cycloid, andepicycloid; and complex arches are thosewhich are described from two or more fixed centers, as manyof the Gothic and Moorisharches are.… … 132 ARCHITECTURAL DRAWING SELF TAUGHT A segmental arch drawn from two centers isshown at Fig. 126. The centers are shown so•that the student will have no trouble in describ-
Architectural drawing
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