A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 251
Fig. 19. the other in the opposite direction to the corresponding sidesof the other angle, the angles are supplementary. Thus, inFig. 20, G H is parallel to and lies in the same direction asD £, and // / is parallel to but lies in the opposite direc-tion to £ F ; hence, angle 6 /// is the…
Electrical engineering · Mechanical engineering
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