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Answers for “在球面几何中,通过直线外一点可以画多少条与该直线平行的直线?”

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The video uses "spherical" and "elliptical" as alternative names for the same positively curved geometry. It introduces the topic as Riemannian geometry and specifies that the positively curved case being discussed is also called spherical or elliptical geometry.

Conditions: The geometry has a positively curved surface.; The context is the introductory naming convention used in the video.