Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 331
pare the length of the projection of a line upon aplane with the length of the line itself :(a) If the line is parallel to the plane. (6) If the line is neither parallel nor perpendicular to the plane,(c) If the line is perpendicular to the plane. 320 SOLID GEOMETRY Propositiox XIX. Theorem 658. Of… … >r.^i^-.Z:-:A
Geometry, Plane · Geometry, Solid
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