| William Pease - 1843 - 68 pągines
...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... | |
| Robert Potts - 1845
...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... | |
| 1845
...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... | |
| James Thomson - 1845 - 358 pągines
...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
...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... | |
| 1846
...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... | |
| 1846
...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... | |
| ...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
...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
...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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