Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 431
rough two points on the surface of a sphere, not the ex-tremities of a, diameter, there exists one and only one great circle, (li) Through three points on the surface of a sphere there existsone and only one circle 909. Def. The distance between two points on the surfaceof a sphere is the length of… … R Given C and D any two points on the circumference, andP and R the poles, of O AMBK.To prove arc PC= arc PD and arc RC = arc RD,The proof is left as an exercise for the student.Hint. Apply § 298. 911. Def. The polar distance of a circle of a sphere is the distance between any point on its…
Geometry, Plane · Geometry, Solid
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