 | Euclides - 1862 - 140 pagina’s
...right angle ; and the straight line which stands on the other is called a perpendicular to it. 1 1 . An obtuse angle is that which is greater than a right angle. 13. A term or boundary is the extremity of anything. 14. A figure is that which is inclosed by one... | |
 | Euclides - 1862 - 172 pagina’s
...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... | |
 | Euclides - 1863 - 122 pagina’s
...angle ; and the straight line which stands on tbo other is 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. ^\ Both obtuse angles and acute angles... | |
 | Henry S. Merrett - 1863 - 476 pagina’s
...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 E. Problem 12. To draw an angle equal to another, Fig. 13. With any... | |
 | Henry S. Merrett - 1863 - 428 pagina’s
...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 D В E. Problem 12. To draw an angle equal to another, Fig. 13. With any... | |
 | Euclides - 1864 - 448 pagina’s
...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. A term or boundary is the extremity... | |
 | Euclides - 1865 - 80 pagina’s
...RIGHT ANGLE; and the straight line which stands upon the other is 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... | |
 | Robert Potts - 1865 - 528 pagina’s
...right angle ; and the straight liae which stands on the other ia 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... | |
 | Euclides - 1865 - 402 pagina’s
...called a right angle ; and the straight line which stands on the other is called a perpendicular to it. An obtuse angle is that which is greater than a right angle. XVIII. A semicircle is the figure contained by a diameter and the part of the circumference cut off... | |
 | Edward Clarke Lowe - 1866 - 172 pagina’s
...called a right angle; and the straight line which stands on the 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... | |
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When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of the 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... 
