Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 41
Fig. 20 … in, § 23] PROJECTION OF LINES 25 22. Limiting Projections of a Plane Figure. Another exer-cise of value consists in studying the possible variations in theprojections of plane figures. Try a square. Place it in variouspositions with respect to H, V, and P, and note the projectionsin the limiting…
Geometry, Descriptive
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