Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 32
D. Place the longest side of triangle A sothat it coincides with the line E F. Place the other triangle (or anystraight-edge) in the position of the triangle B; then holding B withthe left hand, place the triangle A in the position C, so that the longestside passes through the point D. A line may… … Fig. 14. Drawing a Line Parallel to aGiven Line Fig. 15. Drawing a Line Perpendicularto a Given Line It is possible to draw lines forming angles of 15 and 75 degrees byplacing the triangles as shown in Fig. 16. I ,— o —^ \ / ^° o o o o Fig. 16. Drawing Angle of 15° and 75° By the use of the…
Architecture · Building
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