Anthony, Gardner Chace, 1856- [from old catalog], Ashley, George Francis, [from old catalog] joint author · Boston, D. C. Heath & co. · leaf 43
Fig. 71 … Fig. 72 TRUE LENGTH OF A LINE 27 is a^a^ or the distance from a^ to GL. Construction. Fig. 70. The point a isrepresented by its two projections, a and a^.Through a!^ draw HX perpendicular to D^.The revolved position, a! or d\ will lie in HXat a distance from D^ equal to the hypotenuseof a right…
Geometry, Descriptive
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