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Boeken Boek 1 - 10 van 108 over ... angles is called a right angle ; and the straight line which stands on the other....
" ... angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. 12. An acute angle is that which is less than a right angle. 13. A term... "
Elements of Geometry: Containing the First Six Books of Euclid with a ... - Pagina 9
door John Playfair - 1855 - 318 pagina’s
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A New and Enlarged Military Dictionary: Or, Alphabetical Explanation of ...

Charles James - 1805 - 1006 pagina’s
...side, and consequently the arches intercepted either way are equal to 90, or the quarter of a circle. An Acute ANGLE, is that which is less than a right angle, or 90. An Obtuse ANCLE, is that whicb is greater than a right angle. Adjacent ANGLES, are such as...
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The shipwright's vade-mecum [by D. Steel].

David Steel - 1805
...is the angle of ABC. " I An (tht use Angle is that which is greater than a right A ' angle, as ABC. An Acute Angle is that which is less than a right angle, asDBC. By an ANGLE of ELEVATION is meant the angle contained between a line of direction, and any plane...
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The Tutor's Guide: Being a Complete System of Arithmetic; with Various ...

Charles Vyse - 1806 - 320 pagina’s
...denotes the Angle I. An Obtuse Angle is that which is greater than a right Angle, as CAB, (Fig 3.; An acute Angle is that which is less than a right Angle, s DCB, (Fig. 4.) A Superficies or Surface, is an Extension of two Dimensions, viz. Length and Breadth....
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1806 - 311 pagina’s
...perpendicular to it. _____ VIII, Book I. An obtuse angle is that which is greater than a right angle. IX. An acute angle is that which is less than a right angle. X. A figure is that which is inclosed by one or more boundaries. XL A circle is a plane figure contained...
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Geometrical and Graphical Essays: Containing a General Description of the ...

George Adams - 1813 - 534 pagina’s
...letters, -that placed at the angular point being always in the middle ; as B is the angle of AB C. An acute angle is that which is less than a right angle. An obtuse angle is that which is greater than a right angle. A line AB, Jig. 2, plate 4, cutting another...
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814
...called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. XII. An acute angle is that which is less than a right angle. Xlll. " A term or boundary is th$ extremity of any thing." XIV. A figure is that which is inclosed...
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A Treatise on Surveying, Containing the Theory and Practice: To which is ...

John Gummere - 1814 - 346 pagina’s
...ADC and B'DE are called right angles, and the line CD is said to be perpendicular to AB, Fig. 4. 10. An acute angle is that which is less than a right angle, as BDE, Fig. 4. 11. An obtuse angle is that which is greater than a right angle, as ADE, Fig. 4. 13....
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A general view of the sciences and arts, Volume 1

William Jillard Hort - 1822
...A right angle, is that which is made by the meeting of two right lines perpendicular to each other. An acute angle, is that which is less than a right angle. An obtuse angle, is that which is greater than a right angle. A figure is that which is inclosed by...
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The new practical builder, and workman's companion, Volume 2

Peter Nicholson - 1823
...oblique angles to AB ; and in the former case, fig. 6, CD is said to stand at right angles to AB. 10. An ACUTE ANGLE is that which is less than a right angle. 11. An OBTUSE ANGLE is that which is greater than a right angle. In fig. 7, as CD makes the angles...
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - 1825 - 372 pagina’s
...called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. ^ 12. An acute angle is that which is less than a right angle. 13. " A term or boundary is the extremity of any thing." 14. A figure is that which is inclosed by...
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