 | Henry S. Merrett - 1863 - 476 páginas
...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... | |
 | Euclides - 1864 - 448 páginas
...called a perpendicular to it. XL 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... | |
 | Euclides - 1865 - 402 páginas
...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 one or more boundaries. XV. A circle is a plane figure contained by one line, which is called the circumference, and is such... | |
 | Robert Potts - 1865 - 528 páginas
...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. XIII. A term or boundary is the extremity of any thing. XIV. A figure is that which is enclosed by... | |
 | Euclides - 1865 - 80 páginas
...called a PERPENDICULAR to it. 10. An OBTUSE ANGLE is that which is greater than a right angle. 11. An ACUTE ANGLE is that which is less than a right angle. 12. PARALLEL LINES, or those straight lines which are in the same plane, and being produced ever so... | |
 | 1866 - 520 páginas
...enters, its tangent is the straight lino which is used in determining the angle. ANGLE (RECTILINEAR). 311 an acute angle is that which is less than a right angle ; an dbhae angle is that which lies between ona and two right angles. Complemcntal angles are two which... | |
 | Edward Clarke Lowe - 1866 - 172 páginas
...other is & 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. ___^— 1 3. A term or boundary is the extremity ot anything. 14. Afgure is that which is enclosed... | |
 | Euclid, Isaac Todhunter - 1867 - 424 páginas
...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 enclosed by one or more boundaries. 15. A circle is a plane figure contained by one line, which is called the circumference, and is such,... | |
 | Euclid, Isaac Todhunter - 1867 - 426 páginas
...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 enclosed by one... | |
 | Robert Potts - 1868 - 434 páginas
...called a perpendicular to it. XL 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. XTTI. A term or boundary is the extremity of any thing. xrv. XV. A circle is a plane figure contained... | |
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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... 
