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A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Elements of Geometry: Containing the Principal Propositions in the First Six ... - Página 247
por Euclid - 1789 - 272 páginas
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## A pocket encyclopædia, or library of general knowledge, Volúmenes1-4

Edward Augustus Kendall - 1811
...is, into plane, spherical, and solid. Angle, a plane, rectilineal, is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. See Fig. 6. Angle, spherical, is an angle formed on the surface of a sphere by...
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## A Treatise on Surveying, Containing the Theory and Practice: To which is ...

John Gummere - 1814 - 346 páginas
...wholly in that superficies. -- , t 7- A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line, as A, Fig. 1 . Note. — When several angles are formed about the same point, as...
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## Encyclopaedia Perthensis; Or Universal Dictionary of the Arts ..., Volumen10

1816
...taken, the ftraight line between them lies wholly in that fupcrficies. 6. A PLANE RECTILINEAL ANGLE is the inclination of two ftraight lines to one another,...meet together, but are not in the fame ftraight line. Fig- i. Nate. When feveral angles are formed at the fame point, as at B, fig. 3. Each particular angle...
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## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 páginas
...same direction." ••••'i " IX, A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight lice. ': ".!,j ii. , •'• .. B •'•••-.• ' ii5 BOOK I. XXVI. A scalene triangle,...
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## Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 317 páginas
...meeting of the other lines than straight Knes. A plane angle is said to be " the inclination of two lines to " one another which meet together, but are not in the same direc" tion." This definition is omitted here, because that the angles formed by the meeting of...
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## A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 372 páginas
...but are not in the same direction." p. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight «ine. NB ' When several angles are at one point B, any one of them is expressed by three...
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## Elements of Arithmetic, Algebra, and Geometry

George Lees - 1826
...also lines. Book I. ELEMENTS VI.— A plane rectilineal angle is the inclination of two ' straight lines to one another, which meet together, but are not in the same straight line. B NB — When several angles are at one point B, any one of them is expressed by...
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## The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - 1827 - 513 páginas
...are " not in the same direction." IX. A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line. NB ' When several angles are at one point B, any ' one of them is expressed by...
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## Elements of Geometry: With Notes

John Radford Young - 1827 - 208 páginas
...convey but an indistinct notion of angular magnitude ; he calls it " the inclination of two straight lines to one another, which meet together, but are not in the same straight line." To understand • this definition, it is necessary previously to know what is...
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## The First Six Books of the Elements of Euclid, with a Commentary and ...

Euclid, Dionysius Lardner - 1828 - 324 páginas
...the Elements, as being useless. (10) IX. A plane rectilinear angle is the inclination of two right lines to one another, which meet together, but are not in the same right line. (11) X. When a right line standing on another right line makes the adjacent angles...
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