Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 432
Given PC and PD quadrants of great ® of sphere 0, andACDB a great O passing through points C and D.To prove P the pole of great O ACDB. Argument 1. Draw OCj OD, and OP. 2 PC = 90° and pB = 90°- 3. .*. A POC and POD are rt. A) i.e. OP ± OC and OD 4 .*. OP ± the plane of O ACDB. 5. .*. OP is the axis…
Geometry, Plane · Geometry, Solid
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