Anthony, Gardner Chace, 1856- [from old catalog], Ashley, George Francis, [from old catalog] joint author · Boston, D. C. Heath & co. · leaf 54
planes X and M,lies in HX, while (7^ is parallel to VM (Case1). Likewise B^, the horizontal projection ofthe line of intersection between planes X andr, lies in HX, while B is parallel to VT.Then point a, the point of intersection betweenlines B and C, is a point in the line of inter-section… … Fig. 87.
Geometry, Descriptive
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