 | William Ezra Worthen - 1857 - 650 σελίδες
...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,... | |
 | Robert Potts - 1860 - 380 σελίδες
...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... | |
 | Euclides - 1862 - 172 σελίδες
...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... | |
 | Henry S. Merrett - 1863 - 476 σελίδες
...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 - 1863 - 122 σελίδες
...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... | |
 | Henry S. Merrett - 1863 - 428 σελίδες
...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... | |
 | Euclides - 1864 - 448 σελίδες
...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... | |
 | Robert Potts - 1865 - 528 σελίδες
...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 σελίδες
...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... | |
 | Edward Clarke Lowe - 1866 - 172 σελίδες
...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... | |
| |
... angles is called a right angle; and the straight line which stands on the other is 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. "... 
