Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 323
312 SOLID GEOMETRY Proposition XL Problem 637, Through a given point to construct a line per-pendicular to a given plane* … Fig. 1. Fig. 2. Given point P and plane MN. To construct, through P, a line J_ plane MN. I. Construction 1. In plane MN draw any convenient line, as AB. 2. Through P construct plane PQ ± AB. § 624. 3. Let plane PQ intersect plane MN in CD. § 616. 4. In plane P Q construct a line through P ±…
Geometry, Plane · Geometry, Solid
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