Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 62
o, likewise, if it be required to pass a plane through any given point P, Fig. 58,and to arrange it perpendicularly to any given line, AB, it is only necessary tomake a second hne, CP, through P, with its plan perpendicular to the plan of thegiven line AB, and to represent a horizontal line, in… … A problem illustrating the application of two or three recently discussedmethods is worked out in Fig. 59, where it is required to lind the centre of thesphere, which has upon its surface four points whose projections are given. Thefour points are shown in plan and elevation at aa, bb, cc and dd.…
Geometry, Descriptive
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
