Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 435
^ES AKD PLAISTES TAXGEXT TO A SPHERE 921. Def. A straight line or a plane is tangent to a sphere if, however far extended, it meets the sphere in one and onlyone point. 922. Def. Two spheres are tangent to each other if theyhave one and only one point in common. They are tangentinternally if one… … Given plane AB tangent to sphere 0 at T, and OT a radiusdrawn to the point of tangency.To prove plane AB J. OT,The proof is left as an exercise for the student. 924. Question. What changes are necessary in the proof of § 313to make it the proof of § 923 ? 925. Cor. I. (Converse of Prop. VI). A…
Geometry, Plane · Geometry, Solid
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