Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 99
toa common vanishingpoint. Each group ofparallel lines is called asystem, and each linean element of the sys-tem. For example, in Fig. 4, A, A^, A^, and Ag belong to onegroup or system ; B, Bj, B^, and B^, to another; and C, Cj, C^, andCj, to a third. Each system has its own vanishing point,… … 78 PEESPECTIVE DEAWING. 13. As all lines which belong to the same system appear tomeet at the vanishing- point of their system, it follows that if theeye is placed so as to look directly along any line of a system, thatline ivill he seen endwise, and appear as a point exactly covering thevanishing…
Architecture · Building
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