The first six books of the elements of Euclid : with a commentary and geometrical exercises ; to which are annexed a treatise on solid geometry, and short essays on ancient geometrical analysis, and the theory of transversals (1861)
Lardner, Dionysius, 1793-1859 · London : Print. for Taylor and Walton · leaf 310
apparent. If the perpendicular fall on the extremity of thebase, the solids in question will be simply a cylinder and conehaving the same base and altitude, and the proposition is reducedto (216). (247) Cor.— Since the cylinder is equal to v. AD2 x B C, thesolid described by the triangle will be ^… … 292 ELEMENTS OF SOLID GEOMETRY.
Geometry
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