Beman, Wooster Woodruff, 1850-1922, Smith, David Eugene, 1860-1944 · Boston, Ginn & company · leaf 359
z? ^r B, C are the poles of a, b, c,respectively, and if A and A,B and B, C and C lie on thesame side of a, b, c, respec-tively, then A ABC is calledthe polar triangle of ABC. perpendiculars to a, b, c, thefaces opposite A, B, C, respec-tively, and if A and A, B andB, C and C lie on the sameside of…
Geometry
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