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Llibres Llibres 51 - 60 de 113 sobre ... 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 ... - Pągina 9
per John Playfair - 1855 - 318 pągines
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Orr's Circle of the Sciences: The mathematical sciences

William Somerville Orr - 1854
...CD, are perpendicular to each other. An obtuse angle is æhat which is greater than a right angle. An acute angle is that which is less than a right angle. XI. A figure is that which is enclosed by one or more boundaries. XII. A circle is a plane figure enclosed...
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The Elements of geometry; or, The first six books, with the eleventh and ...

Euclides - 1855
...vertical and horizontal line. XL An obtuse angle is that which is greater than a right angle. XIL x An acute angle is that which is less than a right angle. The term oblique angles is applied both to obtuse angles and to acute angles. XIIL [A term or boundary...
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Mensuration of lines, areas, surfaces, and volumes

Robert Rawson - 1856
...is called a perpendicular to it. XL An obtuse angle is that which is greater than a right angle. xn. An acute angle is that which is less than a right angle. /^ XHL " A term or boundary is the extremity of any thing." xrv. A figure is that which is inclosed...
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Appletons' Cyclopędia of Drawing: Designed as a Text-book for the Mechanic ...

William Ezra Worthen - 1857 - 410 pągines
...obtuse angle is that which is greater than a right angle (fig. 4). Fig. 8. Fig. 4. Fig. 5. Fig. 6. An acute angle is that which is less than a right angle (fig. 5). A triangle is a flat surface bounded by three straight lines ; when the three sides are equal,...
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Euclid's Elements of plane geometry [book 1-6] explicitly enunciated, by J ...

Euclides - 1860
...are said to be of the same rpecies when they are both less or both not less than a right angle. 16. A .figure is that which is enclosed by one or more boundaries. The space contained within the boundary of a plane figure is called its surface ; and its surface in reference...
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1860 - 361 pągines
...is called a perpendicular to it. XL An obtuse angle is that which is greater than a right angle. XIL An acute angle is that which is less than a right angle. XIII. A term or boundary is the extremity of any thing. XIV. A figure is that which is enclosed by...
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The school Euclid: comprising the first four books, by A.K. Isbister

Euclides - 1862
...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. XIII. ' A term or boundary is the extremity of any thing.' XIV. A figure is that which is enclosed...
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The elements of plane geometry; or, The first six books of Euclid, ed. by W ...

Euclides - 1863
...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. ^\ Both obtuse angles and acute angles are termed oblique. -^XIII. A term or boundary is the extremity...
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A Practical Treatise on the Science of Land and Engineering Surveying ...

Henry S. Merrett - 1863 - 317 pągines
...perpendicular to another equal to 90 degrees, or the fourth part of a circle, as A В С, Fig. 12, Plate 1. An acute angle is that which is less than a right angle, as A В D. An obtuse angle is that which is greater than a right angle, or more than 90 degrees, as...
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A practical treatise on ... land and engineering surveying

Henry S. Merrett - 1863
...perpendicular to another equal to 90 degrees, or the fourth part of a circle, as ABC, Fig. 12, Plate 1. An acute angle is that which is less than a right angle, as ABD. An obtuse angle is that which is greater than a right angle, or more than 90 degrees, as DB...
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