| Walter Smith - 1872 - Liczba stron: 158
...— No. 1. A right angle. No. 2. An obtuse angle is that which is greater than a right angle. No. 3. An acute angle is that which is less than a right angle. The dotted line shows a right angle in 2 and 3. DIVISION ft. TRIANGLES NAMED FROM TIIEIK ANGLES. DEFINITIONS.... | |
| Henry Major - 1873 - Liczba stron: 580
...acute angle 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, called the circumference, such that all straight... | |
| Euclides - 1874 - Liczba stron: 342
...called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. / 18. 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 inclosed by one... | |
| L J V. Gerard - 1874 - Liczba stron: 428
...sides are perpendicular to one another. An obtuse angle is that which is greater than a right angle ; an acute angle is that which is less than a right angle. 12. When two angles are together equal to a right angle they are complementary angles, and each of... | |
| Edward Atkins - 1874 - Liczba stron: 428
...is that which, is less than a right angle. 13. A terra or boundary is the extremity of anything. 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, James Bryce, David Munn (F.R.S.E.) - 1874 - Liczba stron: 236
...10. An obtuse angle is that which is greater than a right angle, but less than two right angles. 11. An acute angle is that which is less than a right angle. 12. A figure is a portion of space enclosed by one or more boundaries. 13. A plane figure is that which... | |
| Euclides - 1874 - Liczba stron: 120
...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... | |
| Association for the improvement of geometrical teaching - 1876 - Liczba stron: 66
...A perpendicular 'to a straight line is a straight line that makes a right angle with it. DEF. 1 6. An acute angle is that which is less than a right angle. DEF. 17. An obtuse angle is that which is greater than one right angle, but less than two right angles.... | |
| Euclides, James Hamblin Smith - 1876 - Liczba stron: 376
...which is greater than a right angle. XI. An ACUTE ANGLE is one which is less than a right angle. XII. A FIGURE is that which is enclosed by one or more boundaries. XIII. A CIRCLE is a plane figure contained by one line, which is called the CIRCUMFERENCE, and is such,... | |
| Robert Potts - 1876 - Liczba stron: 446
...called a perpendicular to it. XL •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 ot any tM%. XIV. A figure is that which is enclosed TiV one... | |
| |