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 22
triangle is also equilateral^ PROP. VII. THEOR. Upon the same base, and on the same side of it, therecannot be two triangles, that have their sides Which areterminated in one extremity of the base equal to oneanother, and likewise those which are terminated in theother extremity, equal to one… … ^ ELBMHNT8
Euclid's Elements · Geometry · Trigonometry
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