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 300
ring the rota-tion of the triangle FRH, hence the required plane con-tains g0, which coincides with G. It also contains JI, theintersection of the given planes. Join Jq^q- Then since j0 is the horizontal trace of JI,J0S0 wl^ be tne horizontal trace of the required plane. Draw the double-lined scale… … 246 and 247 Examples. —1. Draw a quadrilateral abed having given—sides ab —4.5, /v = 4.o, ^=2.5, da = 2.0 ; diagonal ^=4.0. -Letthe indices of the points a, b, c be 10, 30, 5. Unit = o. 1. Ifthis figure is the projection of a plane quadrilateral ABCD,index the plan d. 2. Let the index of d be 40.…
