Anthony, Gardner Chace, 1856- [from old catalog], Ashley, George Francis, [from old catalog] joint author · Boston, D. C. Heath & co. · leaf 22
ane be revolved to the right or to the left,but care should be used to revolve it into sucha position as will cause the least confusion withother lines of the problem. 6. Notation. Points in space are designatedby small letters, as a, 5, c^ etc., and their vertical,horizontal, and profile… … J G- ^ ^/r Fig. 9. \ \ x^ ^^ \... ^.a V and H *cjh Fig. 6. c •6 d ORTHOGRAPHIC PROJECT/ON Fig. 7.
Geometry, Descriptive
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