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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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## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - 1835 - 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. Book I. -CE NB ' Wheir several angles are at one point B, any one of them is expressed...
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## The Teacher's Assistant in the "Course of Mathematics Adapted to the Method ...

1836 - 472 páginas
...them lies wholly in that superficies. 6. A plane rectilinial angle is the inclination of two straight lines to one another, which meet together but are not in the same straight line. 7. When a straight line standing on another straight line makes the adjacent angles...
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## Elements of Plane Geometry According to Euclid

Andrew Bell - 1837 - 240 páginas
...them lies wholly in that superficies. 9. 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. When several angles are at one point B, any one of them is expressed by three letters,...
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## Remarks on Mathematical Or Demonstrative Reasoning: Its Connexion with Logic ...

Edward Tagart - 1837 - 135 páginas
...the ninth and eleventh definitions. " 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." " An obtuse angle is that which is greater than a right angle." With what propriety...
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## The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841 - 351 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. A NB ' When several angles aro at one point B, any ' one of them is expressed by...
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## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1842 - 317 páginas
...them lies wholly in that superficies. 6. 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. E B NB 'When several angles are at one point B, any one of them is ex' pressed...
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## A course of practical geometry for mechanics

William Pease - 1843 - 68 páginas
...Rectilineal, Curvilineal, or Mixtilineal. 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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## Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Euclides - 1845
...are not in the same straight line. 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. D b C NB When several angles are at one point II, either of them is expressed by...
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## Euclid in Paragraphs: The Elements of Euclid: Containing the First Six Books ...

Euclid - 1845 - 199 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. BC NB ' When several angles are at one point B, any one ' of them is expressed...
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## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

Euclid, John Playfair - 1846 - 317 páginas
...meeting of the other lines than straight lines. A plane angle is said to be "the inclination of two lines to one another which " meet together, but are not in the same direction." This definition is omitted here, because that the angles formed by the meeting of...
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