 | Samuel Webber - 1808 - 520 pagina’s
...surface, every point of which is equally distant from a point within, called the centre* The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed. 9. The axis of a solid, is aline drawn from the middle of... | |
 | Francis Nichols - 1811 - 162 pagina’s
...round surface, which is every where equally distant from a point within it called the centre. A sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains unmoved, and is called the axis of the sphere. 2. A diameter of a... | |
 | Ireland commissioners of nat. educ - 1834 - 370 pagina’s
...on. 9. A cone is a round pyramid, having a circle for its base. 10. A sphere is a round solid, which may be conceived to be formed by the revolution of a semi-circle about its diameter which remains fixed. 11. The axis of a solid is a line joining the middle* o> both... | |
 | James L. Connolly (mathematician.) - 1835 - 264 pagina’s
...round solid body, every part of whose surface is equally from a point within it, called the centre; and it may be conceived to be formed by the revolution of a semicircle round its diameter. To find its solidity, this is the RULE. Multiply the axis or diameter into the circumfe. rence, and... | |
 | William Grier - 1836 - 380 pagina’s
...SECTIONS. DEFINITIONS. A CONE is a solid figure having a circle for its base and terminated in a vertex ; it may be conceived to be formed by the revolution of a triangle about one of its sides. Conic Sections are the figures made by a plane cutting a cone. According... | |
 | William Grier - 1836 - 384 pagina’s
...SECTIONS. DEFINITIONS. A CONK is a solid figure having a circle for its base and terminated in a vertex ; it may be conceived to be formed by the revolution of a triangle about one of its sides. Conic Sections are the figures made by a plane cutting a cone. According... | |
 | Commissioners of National Education in Ireland - 1837 - 290 pagina’s
...on. 8. A cone is a round pyramid, having a circle for its base. 9. A sphere is a round solid, which may be conceived to be formed by the revolution of a semi-circle about its diameter which remains fixed. 10. The axis of a solid is a line joining the middle of both... | |
 | Benjamin Greenleaf - 1839 - 356 pagina’s
...surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed. A hemisphere is half a sphere. 9. The segment of a pyramid,... | |
 | Benjamin Greenleaf - 1841 - 334 pagina’s
...surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fiXed. A hemisphere is half a sphere. 9. The segment of a pyramid,... | |
 | Charles Guilford Burnham - 1841 - 324 pagina’s
...surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains fixed. A hemisphere is half a sphere. 9. The segment of a pyramid,... | |
| |
A sphere is a solid, bounded by one continued convex surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which remains... 
