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 77
onal, obtained from the square on ah, is marked off oneach of the inclined lines. When the plans and elevations of these have beendetermined, they are extended to make the complete diagonals. The third diagonalis then found, as a perpendicular to the plane of the two already found. Par-ticular care… … Fig. 69. EXERCISE XXIX 1. Find the projections of a tetrahedron, 2 edge, when one edge is at 25° to the H.P. andanother edge is at 45° to the H.P. 2. Find the projections of an octahedron, \\ edge, when one diagonal is in the V.P. at20° to the H.P., and another diagonal is at 35° to the H.P. 3.…
Geometry, Descriptive
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