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 316
the angle at C is the true anglerequired. Peoblem 78. The plan abc of a triangle being given,—a being 5, b 4, and c 2above the H.P.,—to find its elevation, 6 of each side, and trueshape. Scale ^ full size. Fig. 100. Draw XY at any convenient distance above the plan, anddraw projectors from the… … to the heights of a and V above XY. AB represents the truelength of ctb, and their inclination to each other is B. Proceed in the same manner with the other two sides.Havino- obtained the true lengths of each side, construct thetriangle ABC with them. This gives the true shape of thetriangle…
Geometrical drawing
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