Modern carpentry and joinery : being a compilation of the very best things and most modern and practical methods known in the arts of carpentry and joinery (1910)
Hodgson, Frederick Thomas, 1836- · Chicago : F. J. Drake & Co. · leaf 55
the hori-zontal projection of A G; but A G is a part of A H, andthe projection of that line is required for one of thefaces of the solid; therefore as AG:Ag::AH:x. Inother words, the length, the length of x may be ob- 52 MODERN CARPENTRY tained by drawing a fourth proportion of the threelines it… … Fig. 29. assumed pyramidal base b c f. Since A G is a portionof A H, A G will be so also. Produce A G, therefore,to H, making AH equal to AH (No. 1) and from Hlet fall a perpendicular on A g produced, which givesh the point sought. Produce H h, and carry on it the SOLID GEOMETRY 53 length H D or H…
Carpentry
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