An Intrinsic Formula for the Cross Ratio in Spherical and Hyperbolic Geometries

Author: Foote Robert L.   Sun Xidian  

Publisher: Mathematical Association of America

E-ISSN: 1931-1346|46|3|182-188

ISSN: 1931-1346

Source: The College Mathematics Journal, Vol.46, Iss.3, 2015-05, pp. : 182-188

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Abstract