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 300
reater than the side A B or the radius of the base,and therefore the point H lies outside the base.The same may be proved by every section parallelto the base, and therefore it follows that the planeC B P D meets the conical surface only in P B,lying elsewhere wholly outside it. (208) Def. — Such a… … 28c2 ELEMENTS OF SOLID GEOMETRY. (210) Def. — If the circumference of the base be divided atthree or more points, and lines be drawn from these to the vertex P,as also lines joining the points of division so as to form a polygoninscribed in the base, these lines will form the edges of a…
Geometry
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