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 64
ugh the centre, it will cut that line at right angles ;and if it cut it at right angles, it will bisect it. Let ABC be a circle, and let CD, a straight line drawn through thecentre bisect any straight line AB, which does not pass through thecentre, in the point F: It cuts it also at right angles.… … €4t ILEMBNTS
Euclid's Elements · Geometry · Trigonometry
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