Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 118
give the following: Second Method.—Shown on the right of FN Deter-mining A as before. Let the tangent at A, which isparallel to QF, intersect FFm t. Join FA, and through / draw a line parallel to AN,intersecting FA in n. Bisect hi in a. Then a is a pointon the curve, and the tangent at a is… … 104. Examples on the parabola. 1. Construct a parabola for which the distance of the focus from the directrix is §. Measure the latus rectum. Ans. ij. 2. In Ex. 1 take a point P on the curve distant 2 from the focus, and draw the ordinate, the tangent, and the normal at /.Measure the length of the…
