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 168
mp;c. Q. E. D. PROP. IX. THEOR.* The circumference of a circle exceeds three times thediameter, by a line less than ten of the parts, of which thediameter contains seventy but greater than ten of the partswhereof the diameter contains seventy-one. L^-t ABD be a circle, of which the centre is C, and… … » In this proposition, the character4-placed after a uuuber, signifies that sonoething is toIk aiUled to it; aud tno character—, on tue other kaud, siguihes tuat soiiieriiiuK »^ t<J )>. uikeiiaway from it. 168 SUPPLEMENT TO THE ELEMENTS BC: Draw DF perpendicular toBC, and let it meet the…
Euclid's Elements · Geometry · Trigonometry
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