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" A Right angle is that which is made by one line perpendicular to another. Or when the angles on each side are equal to one another, they are right angles. "
The principles of architecture - Page xxxviii
by Peter Nicholson - 1809
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A Treatise on Mensuration, Both in Theory and Practice

Charles Hutton - Measurement - 1788 - 728 pages
...different directions, and meeting in a point. 14. Angles are right or oblique, acute or obtufe. 15. A right angle, is that which is made by one line perpendicular to another. Or when, the angles on each fide are equal to one another, they are right .angles. 1 6 An oblique angle is that which is made by...
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Mathematics: Compiled from the Best Authors, and Intended to be ..., Volume 1

Samuel Webber - Mathematics - 1808 - 466 pages
...inclination, or opening, of two lines, having different directions, and meeting in a point. 341 15. A right angle is that, which is •made by one line...another. Or when the angles on each side are equal to one another, they are right angles. 1 6. An oblique angle is that, which is made by two oblique...
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The carpenter's new guide

Peter Nicholson - 1808 - 258 pages
...the fame plane, meeting in a point, as I. 14. Angles are either right, acute, or oblique, as K. 15. A right angle is that which is made by one line perpendicular to another, or when the angles on eachßde are equal, as G. 16. An acute angle is lefs than a right angle, as K. 17. An obiufe angle...
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A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - Mathematics - 1811 - 406 pages
...different directions, and meeting in a point. 14. Angles are Right or Oblique, Acute or Obtuse. 1 5. A Right Angle is that which is made by one line perpendicular...another. Or when the angles on each side are equal to One another, they are right angles. ( 16. An Oblique Angle is that which is made by two oblique...
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A Course of Mathematics: In Two Volumes : for the Use of Academies ..., Volume 1

Charles Hutton - Mathematics - 1816 - 610 pages
...having different directions, and meeting in a point. U Angles are Right or Oblique, Acute or Obtuse. 15. A Right Angle is that which is made by one line perpendicular...another. Or when the angles on each side are equal to one another, they are right angles. 16. An Oblique Angle is that which is made by two oblique lines...
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A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - Mathematics - 1822 - 616 pages
...different directions, and meeting in a point. 14 Angles are Right or Oblique, Acute or Obtase. 15. A Right Angle is that which is made by one line perpendicular...another. Or when the. angles on each side are equal to one another, they are right angles. 16. An Oblique Angle is that which is made by two oblique lines...
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A Course of Mathematics for the Use of Academies: As Well as ..., Volume 1

Charles Hutton - Mathematics - 1825 - 608 pages
...having different directions, and meeting in a point. 14. Angles are Right or Oblique, Acute or Obtuse. 16. A Right Angle is that which is made by one line...another. Or when the angles on each side are equal to one another, they are right angles. 16. An Oblique Am;le is that which is made by two oblique lines...
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A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - Mathematics - 1831 - 632 pages
...and meeting in a point. 14. Angles are Right or Oblique, Acute or Obtuse. 15. A Right Angle isthat which is made by one line perpendicular to another. Or when the angles on each side are equal to one another, they are right angles. 16. An Oblique Angle is that which is made by two oblique lines...
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Civil Architecture, Or, A Complete Theoretical and Practical System of ...

Edward Shaw - Architecture - 1832 - 402 pages
...towards one another, meeting in a point, as J. 15. Anglet are either right, acute, or oblique, as K. 16. A right angle is that which is made by one line...another, or when the angles on each side are equal, as M. 17. An acute angle is less than a right angle, as N, 2. 18. An obtuse angle is greater thaira right...
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The Mechanic's Companion: Or, the Elements and Practice of Carpentry ...

Peter Nicholson - Bricklaying - 1832 - 424 pages
...towards one another in the same plane, meeting in a point. Angles are either right, acute, or oblique. A right angle is that which is made by one line perpendicular...another, or when the angles on each side are equal. An acute angle is less than a right angle. A plane is a surface with which a straight line will every...
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