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 23
ed at the begin-ning of its motion to coincide with C A.As it revolves from C A0 to C A„ C A2, C A3, &c, its divergence from C A, or, what is the same, the angleit makes with C A, continually increases. The line continuing torevolve, and successively assuming the positions C Al5 C A2, C A3,C… … BOOK THE FIRST. O and to form no angle with it. Nevertheless, when the student ad-vances further in mathematical science, he will find, that not only theline C A5 is considered to form an angle with C A0, but even when therevolving* line continues its motion past C A5, as for instance, to C Afl,it…
Geometry
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