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الكتب الكتب 1 - 10 من 50 فيLet any plane DE pass through AB, and let CE be the common section of the planes....
" Let any plane DE pass through AB, and let CE be the common section of the planes DE... "
New series of The mathematical repository - الصفحة 114
بواسطة Thomas Leybourn - 1830
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1806 - عدد الصفحات: 311
...EB : : CF c 11. 5. : FDC. Wherefore, if two straight lines, &c. QED Book H. D H PROP. XVII. THEORv IF a straight line be at right angles to a plane, every plane which passes through the line is also at right angles to that plane. Let the straight line AB be at...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1806 - عدد الصفحات: 518
...therefore c, as AE to EB so is CF to FD. Wherefore, if two straight lines, &c. QED PROP. XVIII. THEOR. IP a straight line- be at right angles to a plane, every plane which passes through it shall be at right angles to that plane. t . Let the straight line AB be at...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1810 - عدد الصفحات: 518
...therefore c, as AE to EB, so is CF to FD. Wherefore, if two straight lines, M fcc.QED PROP. XVIII. THEOR. IF a straight line be at right angles to a plane, every plane which passes through it shall be at right angles to that plane. Let the straight line AB be at right...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - عدد الصفحات: 528
...same reason, be- Boo* Xl. 7" • 16. 11. k2. 6. Wherefore, if two straight 11.5. PROP. XVIII. THEOR. IF a straight line be at right angles to a plane, every plane which passes through it shall be at right angles to that plane. Let the straight line AB be at right...
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - عدد الصفحات: 317
...(11. 5.), as AE to EB, so is CFto FD. Wherefore, if two straight hnes, &c. q. ED PROP. XVII. THEQR. If a straight line be at right angles to a plane, every plane which passe.' through that line is at right angles to thefirst-mentioned plane. Let the straight line...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1819 - عدد الصفحات: 333
...Therefore. (11.5.),asAEtoEB,soisCFtoFD. Wherefore, if two straight lines, &c. Q, ED PROP. XVII. THEQR. Jf a straight line be at right angles to a plane, every plane which passes through that line ii at right angles to the first-mentioned plant. Let the straight line...
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - عدد الصفحات: 372
...(11. i.) as AE to EB, so is CF to FD. Wherefore, if two straight lines, &c. QED PROP. XVIII. THEOREM. If a straight line be at right angles to a plane, every plane which pastes through it thall be at right angles to that plane. ELEMENT« Oí EUCLID, BOOK XI. 993...
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The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - 1827 - عدد الصفحات: 513
...therefore*, as AE to EB, so is CF to FD. Wherefore, if two straight lines, &c. QED PROP. XVIII. THEOR. If a straight line be at right angles to a plane, every plane which passes through it shall be at right angles to that . plane. Let the straight line AB be at right...
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The Elements of Euclid: viz. the first six books, together with the eleventh ...

Euclid, Robert Simson - 1835 - عدد الصفحات: 513
...Wherefore, " if two straight lines," &c. QED Book XI. a 16. 11. b 2. 6. ell. 5. PROP. XVIII. THEOR. If a straight line be at right angles to a plane, every plane which passes through that line icill also be at right angles to the first mentioned plane. Let the...
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Mathematical problems and examples, arranged according to subjects, from the ...

1836
...equal to the similar and similarly described figures upon the sides containing the right angle. 18. If a straight line be at right angles to a plane, every plane passing through it shall be at right angles to that plane. EUCLID. 3 20. One circle cannot touch another in more points...
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