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spherical geometry

spherical geometry

geometry of the two-dimensional surface of a sphere

en-GB/ˈsfɛɹɪkl d͡ʒɪˈɒməˌtɹɪ/

en-US/ˈsfɛɹɪkəl d͡ʒiˈɑmətɹi/

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area of mathematics non-Euclidean geometry