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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
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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...
عرض كامل - حول هذا الكتاب ## 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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