Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 180
M.K N 180 GEOMETRY. … M:x:]Nr But CP being drawn perpendicular to AB, the triangles ABO,DCP will be similar, and give the proportionAO : CP : ; AB : CD ; hence AO x CD = CP x AB ; but CP X AB is double the area of the triangle ABC ; hence we have A0xCD-2ABC; hence the solid described by the triangle ABC is also measured…
Trigonometry · Geometry
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