Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 113
gle that the sides of each triangle are supplements ofthe angles opposite to them in the other triangle. Two such triangles are said to be polar with, respect to eachother. Let A, B, C (Fig. 35) denote the angles of one triangle; a, b, c the sides opposite these anglesrespectively; and letA,B, Cand… … Fig. 35. Exercise XIX. 1. The angles of a triangle are 70csides of the polar triangle. 80°, and 100°; find the THE RIGHT SPHERICAL TRIANGLE. 105 2. The sides of a triangle are 40°, 90°, and 125°; find theangles of the polar triangle. 3. Prove that the polar of a quadrantal triangle is a…
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