Have two tangents to the curve, andthe points of contact given, one of thepoints of contact being the greatest pro- … jection, and the other the lower ex-tremity of the curve. In Figures 13, 14 and 15, let A B, BC, be the two tangents, A the point ofcontact at the greatest projection, andC the lower extremity of the curve;draw A E, parallel to B C, and C B, toF, making E F, equal to E C ; divideA E, and A B, each…
Architecture
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
