Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 54
ich corresponds to the assumedfigure in the same way as if they lay indifferent planes. Figures so related in oneplane are called homological figures and thecentre, 0, a centj-e of homology. 146. Had Ai B^ C, been a circle, and allits points joined with S^, then from what haspreceded we know that… … 48 THEORETICAL AND PRACTICAL GRAPHICS. 0 in the same plane with it get an ellipse in place of the triangle A^Bi Cj. Before illustrating thisit is necessary to show the relation of the axis to the other elements of the problem and to supplya test as to the nature of the conic. 147. First as to the…
Mechanical drawing · Lettering
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