Anthony, Gardner Chace, 1856- [from old catalog], Ashley, George Francis, [from old catalog] joint author · Boston, D. C. Heath & co. · leaf 46
ite direction, thus causing the revolvedposition to pass through the vertical trace ofthe line. Again it is of interest to note that when aline is revolved into a coordinate plane to de-termine its true length, the angle which therevolved position makes with the axis is thetrue size of the angle…
Geometry, Descriptive
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