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 61
M ISLEMENTS PROP. A, THEOn. If one side of a triangle be bisected, the sum of thesqnares of the other two sides is double of the square ofhalf the side bisected, and of the square of the line drawnfrom the poiht of bisection to the opposite angle of thetriangle. Let ABC be i triangle, of whicli the…
Euclid's Elements · Geometry · Trigonometry
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