Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 37
36 JBLEMFNTS Let the straiE^ht line EF fall upon the parallel straight lines AB>CD; the alternate anajles AGH, GRD are equal to one another; andthe exterior angle EGB is equal to the interior and opposite, uponthe same side, GHD ; and the two interior andes BGH, GHD uponthe same side are…
Euclid's Elements · Geometry · Trigonometry
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