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 293
XXXII. (166) To construct a regular solid with pentagonal faces. Let A B C D E be a regular pentagon. From the vertex Adraw the line A a equal to the side ofthe pentagon, and inclined to A B andA E at angles equal to the angle of thepentagon. The solid angle formed bythe three lines which meet at… … BOOK THE THIRD. %J$ pentagon, forming solid angles of the same kind at the pointsB, C, D, &c. Let the pentagon, of which a A B b arc three sides,be completed, and in the same manner let each of the otheroentagons on the sides of th~ base A B C D E be completed. Weshall thus have a shell witn…
Geometry
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