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" Convertendo, by conversion ; when there are four proportionals, and it is inferred, that the first is to its excess above the second, as the third to its excess above the fourth. "
A Supplement to the Elements of Euclid - Side 288
av Daniel Cresswell - 1819 - 410 sider
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Euclid's Elements: Or, Second Lessons in Geometry,in the Order of Simson's ...

Dennis M'Curdy - 1846 - 166 sider
...be, &c. QED Recite (a) hyp. ; (4) p. 16, 5 ; (c)p. 17, 5; (d)p. 11, 5. E Th. Of four proportionals, the first is to its excess above the second as the third is to its excess above the fourth. Given AB : BE : : CD : DF ; then, by hyp., AB : AB— BE : : CD...
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The definitions, postulates, axioms, and enunciations of the propositions of ...

Euclides - 1848 - 52 sider
...remainder, as the magnitude taken from the first to that taken from the other. PROP. E. THEOREM. Ilf four magnitudes be proportionals, they are also proportionals...second, as the third to its excess above the fourth. PROP. XX. THEOREM. If there be three magnitudes, and other three, which, taken two and two, have the...
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The first six books of the Elements of Euclid, with numerous exercises

Euclides - 1853 - 176 sider
...Book 5. XVII. Converterido, by conversion ; when there are four proportionals, and it is inferred that the first is to its excess above the second as the third to its excess above the fourth. Prop. E. Book 5. XVIII. Ex œquaM (sc. distantia), or ex ceqiw, from equality of distance ; when there...
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The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

Royal Military Academy, Woolwich - 1853 - 400 sider
...Book V. 17. Convertendo, by conversion ; when there are four proportionals, and it is inferred, that the first is to its excess above the second, as the third to its excess above the fourth. Prop. E , Book V. 18. Ex sequali (sc. distantia), or ex sequo, from equality of distance; when there...
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The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855 - 270 sider
...first is to the part of the second. The demonstration is contained in the preceding. PKOP. E. THKOE.EM. If four magnitudes be proportionals, they are also...is to its excess above the second, as the third to Us etccesi above the fourth. Let AB be to BE, as CD to D F. And let AE be the excess of AB above BE,...
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A Supplement to the Imperial Dictionary, English, Technological, and ...

John Ogilvie - 1855 - 434 sider
...COX\'ERS'H)N,n.[add.]Co«rer,.-iono/ proportions, in math., is, when of four proportionals it is inferred that the first is to its excess above the second, as the third to its excess above the fourth, and the four terms, when thus arranged, are said to be proportionals by conversion. CONVER'SIVE, a....
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The Elements of Euclid, with many additional propositions, and explanatory ...

Euclides - 1855 - 230 sider
...book 6. 18. Convertendo, by conversion ; when there are four proportionals, and it is inferred, that the first is to its excess above the second, as the third to its excess above the fourth. Proposition E, book 5. 19. Ex ceqwtli (so. digtantia), or ex cgquo, from equality of distance ; when...
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Elements of Geometry: Containing the First Six Books of Euclid with a ...

John Playfair - 1855 - 334 sider
...Book 5. 18. Convertendo by conversion ; when there are four proportionals, and it is inferred, that the first is to its excess above the second, as the third 19. Ex aequali (sc. distantia), or ex sequo, from equality of distance ; when there is any number of...
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A Treatise on Arithmetic ...

Noble Heath - 1855 - 468 sider
...P — 1 ,• P • • x — y ,• x an<^ invertendo p : p — q : : x : x — y ; that is to say, the first is to its excess above the second, as the third is to its excess above the fourth. 413. If we put the proportion p : q. : : x : y in equation, thus...
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An American Dictionary of the English Language: Exhibiting the Origin ...

Noah Webster - 1857 - 1310 sider
...one. — Conversion of proportion* in mathematics, IB when, of four proportionals, it id inferred that the first is to its excess above the second as the third is to its excess above the fourth. — Conversion of propositions, in logic, is a changing of the subject...
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