Babbitt, Arthur B. (Arthur Bradford), b. 1873 · New York, H. Holt and company · leaf 37
short edge of the triangle is made to co-incide with the given Une and is then pushed alongthe edge of the second triangle, thereby bringing theother short edge to the point through which the re-quired perpendicular is to be drawn. In Fig. 12,the line M N is the given line and X Y is the…
Mechanical drawing
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