Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle, and the geometry of solids : to which are added, Elements of plane and spherical geometry (1826)
Playfair, John, 1748-1819, Euclid · Philadelphia : Marot & Walter · leaf 194
is equal (S^. 1.) to eachof the opposite sides DH, EK; wherefore DH is ecjual to EK.: add,or take away the common part HE; then DE is equal to HK: Where-fore also the Iriaugls CHE is equal (38.1.) to the iriaiigle BHK: andthe parallelogram 1)G is equal (36.1.) to the parallelogram HN. Forthe same… … 194 SUPPLEMENT TO THE ELEMENTS contain the prism DAG are similar and equal to those which contaiiithe prism HLN, each to each; and the contiguous planes are alsoequally inclined to one another (15. 2. Sup.), because that the paral-lel planes AD and LH, as also AE and LK, are cut by the same…
Euclid's Elements · Geometry · Trigonometry
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