 | William Pease - 1843 - Liczba stron: 80
...plumb line, which it need not be. 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. The length of the legs of a rectilineal angle does not affect its quantity as an angle, for whether... | |
 | Euclides - 1845 - Liczba stron: 546
...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 inclosed by... | |
 | Scottish school-book assoc - 1845 - Liczba stron: 444
...called a perpendicular to it. 10. An obtuse angle is that which is greater than a right angle. 1 1 . An acute angle is that which is less than a right angle. 12. A term or boundary is the extremity of any thing. 13. A figure is that which is enclosed by one... | |
 | Euclides, James Thomson - 1845 - Liczba stron: 382
...said to be at right angles to it. 9. An obtuse angle is that which is greater than a right angle. 10. An acute angle is that which is less than a right angle. 11. Parallel straight lines are those which are in the same plane, and which, being produced ~~~ ever... | |
 | Euclides - 1846 - Liczba stron: 292
...called a perpendicular to it. xi. 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. xin. A term or boundary is the extremity of any thing. xiv. A figure is that which is inclosed by one... | |
 | Great Britain. Admiralty - 1846 - Liczba stron: 128
...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 by... | |
 | Great Britain. Admiralty - 1846 - Liczba stron: 128
...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 by... | |
 | Liczba stron: 458
...THE DECORATORS ASSISTANT. Steps to DEFINITIONS OF PRACTICAL GEOMETRY. (Continued from page 5.) 18. AN acute angle is that which is less than a right angle, as n rr 19. An obttue angle it that which is greater than a right angle, as n E F. OBs.— An ingle... | |
 | Euclides - 1847 - Liczba stron: 128
...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. Thus the angles ABC, ABD are each of them right angles; EBC is an obtuse, and EBD an acute angle ;... | |
 | Charles Richson - 1848 - Liczba stron: 98
...angles are described. DEFINITION. — " An obtuse angle is that which is greater than a right angle." " An acute angle is that which is less than a right angle." EXAMPLE IV.— To draw various angles in opposite sides of a horizontal or perpendicular. DIAGRAM,... | |
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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... 
