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 222
o^a triangle, is to the rectangle contained by two straightlines, of which one is the base or third side of the triangleincreased by the difference of the two sides, and the otherthe base diminished by the difference of the same sideJs^as the square of the radius to the square of the sine of… … i22 PLANE TRIGONOMETRY. Produce the side AC to D, so that AD=AB; join BD, and dravr
Euclid's Elements · Geometry · Trigonometry
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