Browsing by Subject "spherical geometry"

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    Spherical and hyperbolic geometry in the high school curriculum
    (2009-08) Cowley, Corrie Schaffer; Armendariz, Efraim P.; Daniels, Mark L.
    The structure of Euclidean, spherical, and hyperbolic geometries are compared, considering specifically postulates, curvature of the plane, and visual models. Implications for distance, the sum of the angles of triangles, and circumference to diameter ratios are investigated.