Elements of plane and solid free-hand geometrical drawing, with lettering; and some elements of geometrical ornamental design, including the principals of harmonic angular ratios, etc. In three parts ... for draughtsmen and artisans; and teachers and students of industrial and mechanical drawing (1878)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 40
Ex. 72. A four pointed star, requiring two lines at rightangles to each other, and the equal bisecting lines of thoseangles. … Ex. 73. A gate. JSTote that an angle of 24° is four-fifteenthaof a right angle. £ r~^ Ex. 74. An arch, giving practice in parallels, equal distances(each side of the arch, and the heights at the ends) and arcs, ofvarious sizes, and parts of a circle. CHAPTER VI. PLANE FIGURES BOUNDED BY STRAIGHT…
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
