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 153
the unknown parts be D, c, C, and D, c, C. From the separated angle draw thediagonals to the extremities of the unknown side, as GC, CD (or GDi), and CC,CD. In the usual way GABC can be applied to GABC, and GFED to EQUALITY OF POLYGONS. 133 CFED. Whence CC = GC, CD = CD, and angle CCD = CCD. Thus…
Geometry · Trigonometry
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