Higbee, F. G · New York, John Wiley & Sons · leaf 42
PLANES 31 is to assume one view of the point — as the plan view a in Fig.34 — and through this assumed plan view of the point draw theplan mn of a line MN parallel to the H trace. Since this lineMN is parallel to the H trace its elevation will be parallel to the … Fig. 34. G. L.; mn and mn, then, are the plan and elevation of a lineMN lying in the plane T. Since a lies on mn, a will lie onmn, and the point A then, as represented by the plan a andelevation a, will be a point in the plane T. PROBLEMS ON PLANES 45.. Assume a plane parallel to the G. L. so that…
Geometry, Descriptive
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