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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. The most general division of angles is, into plane, spherical, and solid. "
Pantologia. A new (cabinet) cyclopędia, by J.M. Good, O. Gregory, and N ...
by John Mason Good - 1813
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The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ...

Robert Simson - Trigonometry - 1775 - 534 pages
...but are not in the fame " dire&ion." IX. A plane rectilineal angle is the inclination of two ftraight lines to one another, which meet together, but are not in the fame ftraight line. *NB Book I. CE * of them is exprefled by three letters, of which the letter that...
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The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 552 pages
...not in the fame " direction." yiii. IX. A plane rectilineal angle is- the inclination of two flraight lines to one another, which meet together, but are not in the fame ftraight line. Book I. A! B CE ' NB When feveral angles are at one point B, an ' of them is expreffed...
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Elements of Geometry: Containing the Principal Propositions in the First Six ...

Euclid - Euclid's Elements - 1789 - 296 pages
...ftill a fuperfluous condition. He deiines a rectilineal angle, to be " the inclination of two ftraight lines to one another, which meet together, but are not in the fame ftraight line ." Now their not being in the fame ftraight line, is a neceffary confequence, obvioufly...
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Elements of Geometry;: Containing the First Six Books of Euclid, with Two ...

Euclid, John Playfair - Euclid's Elements - 1795 - 462 pages
...the meeting of other lines than ftraight Unes. A plane angle is faid to be ' the inclination of two lines to one another which meet together, but are not in the fame direction." This definition is omitted here, becaufe that the angles formed by the meeting of...
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The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 374 pages
...in that fupeificies. VIII. Omitted. IX. A plane rectilineal angle is the inclination of two ftraight lines to one another, which meet together, but are not in the fame ftraight line. B NS BooK T. * of them is expreffed by three letters, of which the letter that...
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Elements of Geometry: Containing the Principal Propositions in the First Six ...

John Bonnycastle - 1803 - 306 pages
...Hill a fuperfluous condition. He defines a reftilineal angle, to be " the inclination of two ftraight lines to one another, which meet together, but are not in the fame ftraight line." Now their not being in the fame ftraight line, is a neceffary confequence, obvioufly...
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Elements of Geometry;: Containing the First Six Books of Euclid, with a ...

John Playfair, Euclid - Circle-squaring - 1804 - 468 pages
...meeting of other lines than flraight lines. A plane angle is faid to be " the inclina" tion of two lines to one another which meet together, but are " not in the fame direftion." This definition is omitted here, becaufe that the angles formed by the meeting of...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 546 pages
...to one another See N. " in a plane, which meet together, but are not in the same " direction." IX. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. B C E NB ' When several angles are at one point B, any one of ' them is expressed by three letters,...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - Geometry - 1810 - 554 pages
...to one another See N. " in a plane, which meet together, but are jiot in the same " direction." IX. A plane rectilineal angle is the inclination of two...meet together, but are not in the same straight line. Book I, BC NB « When several angles are at one point B, any one of them is expressed by three letters,...
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A pocket encyclopędia, or library of general knowledge, Volumes 1-4

Edward Augustus Kendall - 1811 - 462 pages
...The most general division of angles is, into plane, spherical, and solid. Angle,aplane, rectilineal, is the inclination of two straight lines to one another,...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 the intersection of...
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