Which statement represents the parallel postulate in Euclidean geometry, but not elliptical or spherical geometry?

In Euclidean geometry, the parallel postulate says that through a point not on a given line, exactly one line can be drawn parallel to that line. Elliptical and spherical geometries have no parallel lines, while some other non-Euclidean geometries have more than one. Therefore, the statement that there is exactly one parallel line is the Euclidean postulate.

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