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 274
f, if v were inside this semicircle ; therefore, cv mustnot be less than ce. Now, observing that cov and coxe are right-angledtriangles, having the sides co, co. equal, it appears that if cv is greaterthan ce, the angle ovc opposite oc must be less than <p opposite o-^c.But 6 + ovc = go°,… … Examples.—1. Determine the traces of a plane inclined at 6o°to the ground, and 450 to the vertical plane. 2. A point A is 2j above the ground, and i| in front of the vertical plane ; determine the traces of a plane passing throughA and inclined at 400 and 550 to the horizontal and verticalplanes of…
