Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 129
fig. 116. … % 117. JO J l 1Z 13 1L 15 PERSPECTIVE DRAWING. 121 eleven parts, and with nine of these make the line de perpendicular toa b ; the line d c is in the proportion of 9 to 11 to the line a b. The line €
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
