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 164
eter of the poly-gon may be less than any given line. This is proved like the pre-ceding. PROP. VI. THEOR. The areas of circles are to one another in the duplicateratio, or as the squares, of their diameters. Let ABD and GHLbe two circles, of which the diameters are ADand GL; the circle ABD is to…
Euclid's Elements · Geometry · Trigonometry
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