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 26
OF GEOMETRY. BOOK I. •2d … PROP. XII. PROB. To draw a straight line perpendicular to a given straightline, of an unlimited length, from a given point without it. Let AB be a given straight line, which may be produced to anylength both ways, and let C be a point without it. It is required todraw a straight line perpendi-cular…
Euclid's Elements · Geometry · Trigonometry
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