Ornamental drawing, and architectural design. With notes, historical and practical. Upwards of 200 illustrations (1857)
Burn, Robert Scott · London, Ward and Lock · leaf 20
G, Example 19, fig. 22, is shown in fig. 23. If the points 1 2, 2 3, 3 4, 4 5, 5 6, 6 7, 7 8, are joined, an octagon will be formed, and a square by joining 9 10, 12 11. The octagon forms the basis of the combination, and is the first thing to be drawn, which may be done as in fig. 23 by forming a… … fig. 22. to the diagonal lines c b, a d, draw lines equal to i i. From e, one end of the octagon side, draw a line perpendicular to c d, joining the diagonal a d in h. From n, the end of another side of the octagon, draw parallel to c d a line cutting the diagonal d a in o, parallel to eh, k t ;…
Architecture · Decoration and ornament
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.