Elements of geometry : containing books I to VI and portions of books XI and XII of Euclid, with exercises and notes (1881)
Smith, J. Hamblin (James Hamblin), 1829-1901, Kirkland, Thomas, 1835-1898 · Toronto : W.J. Gage · leaf 251
ase of quadrilaterals and polygons both condi-tions are necessarv: thus any two rectangles have each angleof the one equal to each angle of the other, but they are notnecessarily similar figures. N.B.—The very important Prop. xxv. (Eucl. vi. 33) is indepen-dent of all the other Propositions in this… … Let the a s ABC, ADC have the same altitude, that is, theperpendicular drawn from A to BD. Then must A ABC he to A ADC as base BC is to base DC. In DB produced take any number of straight linesBG, GHeach^BC. 1.3. In BD produced take any number of straight linesDK, KL, LM each=1)0. I. 3. Join AG,…
Geometry · Geometry, Plane
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