Legendre, A. M. (Adrien Marie), 1752-1833, Brewster, David, Sir, 1781-1868, Davies, Charles, 1798-1876 · New York, Wiley & Long · leaf 164
Î64 GEOMETRY. … ab BC : 5c mon base (Book VI. Prop. XVI.). Througha,m the plane BAH,draw ah perpendicular toEH : then will ah also be per-pendicular to the base BDC(Book VI. Prop. XVII.) ; andAH, ak will be the altitudesof the two prisms. Now, because of the similartriangles ABH,«B//, and of thesimilar…
Trigonometry · Geometry
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