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If, at a point in a straight line, two other straight lines upon the opposite sides of it, make the adjacent angles, together equal to two right angles, these two straight lines shall be in one and the same straight line.
Elements of Geometry;: Containing the First Six Books of Euclid, with Two ... - Pagina 18
door John Playfair - 1795 - 400 pagina’s
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## Liber Cantabrigiensis, an account of the aids afforded to poor students, the ...

Robert Potts - 1855
...straight line. 2. If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these tWo straight lines shall be in one and the same straight line. The angles A and C of a parallelogram...
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## Elements of Geometry and Conic Sections

Elias Loomis - 1858 - 234 pagina’s
...of Prop. II.). If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines are in one and the same straight line. At the point B, in the straight line...
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## Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...

Euclides - 1858
...Recap. PROP. 14. — TIIEOR. If at a point in a st. line, two other lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two lines shall be in one and the same line. CONSTRUCTION. — Pst. 2. A straight line may be...
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## The Practice of Engineering Field Work, Applied to Land, Hydrographic, and ...

W. Davis Haskoll - 1858 - 324 pagina’s
...The 14th, Book I. If at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line. The 15th, Book I. If two straight...
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## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1860 - 361 pagina’s
...PROPOSITION XIV. THEOREM. If at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles ; then these two straight lines shall be in one and the same straight line. At the point B in the straight...
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## Euclid's Elements of geometry, books i. ii. iii. iv

Euclides - 1862
...because at the point H in the straight line GH, the two straight lines KH, HM, on the opposite sides of it, make the adjacent angles together equal to two right angles; 8. Therefore KH is in the same straight line with HM. (I. 14.) 9. And because the straight line HG...
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## Responsions

University of Oxford - 1863
...without it. 3. If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line. 4. At a given point in a given...
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## The college Euclid: comprising the first six and the parts of the eleventh ...

Euclides - 1865
...angles. Prop. 14. If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line. Prop. 15. If two straight lines...
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## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - 1867 - 400 pagina’s
...because at the point H in the straight line GU, the two straight lines KH, HM, on the opposite sides of it, make the adjacent angles together equal to two right angles, KH is in the same straight line with HM. [I. 14. And because the straight line HG meets the parallels...
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## Elements of Geometry, Conic Sections, and Plane Trigonometry

Elias Loomis - 1871 - 58 pagina’s
...of Prop. II.). If, at a point in a straight line, two other straight lines, upon me opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines are in one and the tame straight line. then will BD be in the same straight...
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