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 45
44r ELEMENTS … It is required to describe a parallelogram that shall be equal to thtgiven triangle AEC, and have one of its angles equal toD. Bisect (40. 1.) BC in E, join AE, and at the point E in the straightline EC make (23. 1.) the angle CEF equal to D; and through Adravy (31. 1.) AG parallel to BC, and…
Euclid's Elements · Geometry · Trigonometry
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