Babbitt, Arthur B. (Arthur Bradford), b. 1873 · New York, H. Holt and company · leaf 181
Fig. 74 170 MECHANICAL DRAWING … Fig. 75 Fig. 76 equal. See Fig. 76. None of the angles of a scalenetriangle are equal. Triangles classified by their angles A right-angled triangleor right triangle is onehaving a right angle.See Fig. 77.
Mechanical drawing
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