Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 443
CaI), and EAb, the surface of the sphere will be divided intoeight spherical triangles, four of which are seen on the hemi-sphere represented in the figure. Of these eight spherical tri-angles, abCis the one and only one that is so situated that Aand a lie on the same side of BC, B and b on the…
Geometry, Plane · Geometry, Solid
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