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 81
c. Q. E. D. PROP. XXIX. THEOR. In equal circles equal arches are subtended by equalstraight lines. Let ABC, DEF be equal circles, and let the arches BGC, EHFalso be equal; and join BC, EF: the straight line BC is equal to thestraight line EF. Take (l. 3.) K, L the centres of the circles, and join…
Euclid's Elements · Geometry · Trigonometry
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