Higbee, F. G · New York, John Wiley & Sons · leaf 53
plane into H or V about the H or V trace.Assume a point on the trace, as A on the trace tT in Fig. 40, 42 ESSENTIALS OF DESCRIPTIVE GEOMETRY Revolve this point into H about tT as an axis as in Article 32.Through this revolved position, Ah, and the point T on the G. L.draw the line tnT. This will be… … Fig. 41. 37. To find the plan and elevation of a line in a plane when therevolved position of the Kne and plane are given. In Fig. 41 is shown a plane T and a Hne MN in the plane T asthey lie revolved into the H plane at tTtn and MhNh. To findthe actual position of the traces and the plan and…
Geometry, Descriptive
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