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" ... 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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Practical Mechanical Drawing and Machine Design, Self Taught ...

Charles Westinghouse - 1906 - 157 pągines
...as in Fig. 35. An obtuse angle is that which is greater than a right angle as in Fig. 36. Fig. 36. An acute angle is that which is less than a right angle as in Fig. 34. A term or boundary is the extremity of anything. An equilateral triangle is that which...
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Modern Sheet-metal Workers' Instructor: Practical Geometry, Mensuration ...

Joseph H. Rose - 1906 - 309 pągines
...each of fe 3L „, An obtuse angle is that which is greater than a right angle as in Fig. 3. Fig. 3. An acute angle is that which is less than a right angle as in Fig. 1. A term or boundary is the extremity of anything. Fig. 4. Fig. 5. An equilateral triangle...
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Encyclopedia of Engineering: A Treatise on Boilers, Steam Engines ..., Volum 7

Calvin Franklin Swingle - 1906
...it as in Fig 35. Fig. 38. An obtuse angle is that which is greater than a right angle as in Fig. 36. An acute angle is that which is less than a right angle as in Fig. 34. 385 An equilateral triangle is that which has three equal sides as in Fig. 37. An isosceles...
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The advanced class-book of modern geography, by W. Hughes and J.F. Williams ...

William Hughes - 1908
...and an Acute Angle is less, than a right angle. A Term or Boundary is the extremity of anything, and a Figure is that which is enclosed by one or more boundaries. Hence A Circle is a plane figure contained by one line, which is called the circumference, and is such...
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Standard American Cyclopedia of Steam Engineering: A Treatise on the Care ...

Calvin Franklin Swingle - 1913 - 1249 pągines
...as in Fig 35. Fig. 36. An obtuse angle is that which is greater than a right angle- as in Fig. 36. An acute angle is that which is less than a right angle as in Fig. 34. A term or boundary is the extremity of anything. An equilateral triangle is that which...
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Winston's Cumulative Loose-leaf Encyclopedia: A Comprehensive ..., Volum 1

Charles Morris - 1921
...falling on another perpendicularly, or an angle is measured by an arc of 90 deis called ai!:i!it angle. An acute angle is that which is less than a right angle, as E в С. An obtuse angle is that which is greater than a right angle, as EB D. Acute and obtuse...
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The Sheet-Metal Worker's Instructor

R. H. Warn, J. G. Horner - 2002 - 284 pągines
...perpendicular to it (Fig. 2). 8. An obtuse angle is that which is greater than a right angle (Fig. 3). 9- An acute angle is that which is less than a right angle (Fig. 1). 10. A term or boundary is the extremity of anything. 11. A figure is that Fig. 3. which is...
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