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 77
equal to two right angles. Therefore the oppositeangles, &c. Q. E. D. ^ PROP. XXIII. THEOR. Upon the same straight line, and upon the same side ofit, there cannot be two similar segments of circles, notcoinciding with one another. If it be possible, let the two similar segments of circles, viz.…
Euclid's Elements · Geometry · Trigonometry
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