Higbee, F. G · New York, John Wiley & Sons · leaf 127
of some element and the other projection of the pointfound by locating it on the other projection of the same element.Thus, in Fig. 92, the projection y is assumed on the projectionof the element qr and the projection y then will be found on qr.It will be noted, as in the case of cylinders, that…
Geometry, Descriptive
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