Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 111
triangleB; or B could be converted into the isosceles triangle A. An equilateral triangle ABC (Fig. 198) could be converted intothe scalene triangle ABD, or either could be transformed intothe right-angled triangle ABE. Precisely the same principle applies to parallelograms, e.g.— 9° PRACTICAL… … Fig. 199. Fig. 200. rhomboid ABFE, or the rhomboid can be converted into anequivalent square. If triangles and parallelograms stand upon the same or equalbases, and hettveen the same parallels, the triangle is half the areaof the parallelogram, e.g.— The triangle ABF (Fig. 200) is half of the…
Geometrical drawing
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