A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 28
angle L, one would not knowwhether we meant the angle (cor-ner) in which 4 stands, or that inwhich 5 stands. To avoid thisambiguity, we say the angle HLRfor the former, and RLT for thelatter. The angle ZAY is the cor-ner in which 11 stands; that is,the opening between the twolines AY and AZ. In… … Fig. 10. 8 ELEMENTARY GEOMETRY. stands. An angle is also frequently designated by putting a letter or figure init and near the vertex. 23, The Size of an Angle depends upon the rapidity withwhich its sides separate, and not upon their length. III.—The angles BAG and MON, Fig. 10, are equal, since…
Geometry · Trigonometry
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