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 238
way from bothE L and the gnomon N O L is equal to Z ; but since A E andE B are equal, the parallelograms A N and E P are equal, andalso EP and B M are equal (195), therefore AN is equal toB M ; add O N to both, and A X is equal to the gnomon N O L,and therefore equal to the given rectilinear figure… … E B 220 ELEMENTS OF EUCLID. Describe B C, the square of AB (XLVI, Book I.); to ACapply a parallelogram equal to B C and exceeding bya figure A D similar to B C (XXIX); since A D issimilar to B C it is a square; since B C and C D areequal, if C E be taken away from both, B F and A Dare equal, and…
Geometry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
