 | Euclid - Geometry - 1845 - 218 pages
...are opposite are equal, similar, and parallel to one another ; and the others parallelograms. XIV. A sphere is a solid figure described by the revolution...semicircle about its diameter, which remains unmoved. Thus the inner side of the semicircle ABC revolving round the diameter AC, which remains fixed, generates... | |
 | Euclides - 1846 - 292 pages
...that are opposite are equal, similar, and parallel to one another, and the others parallelograms. xiv. A sphere is a solid figure described by the revolution...semicircle about its diameter, which remains unmoved. xv. The axis of a sphere is the fixed straight line about which the semicircle revolves. xvi. The centre... | |
 | Euclid, John Playfair - Euclid's Elements - 1846 - 334 pages
...whereof every opposite two are parallel. 6. A cube is a solid figure contained by six equal squares. 7. A sphere is a solid figure described by the revolution of a semicircle about a diameter, which remains unmoved. 8. The axis of a sphere is the fixed straight line about which the... | |
 | Dennis M'Curdy - Geometry - 1846 - 168 pages
...a solid figure contained by six quadrilateral figures, whereof every opposite two are parallel. 7. A sphere is a solid figure described by the revolution of a semicircle about a stationary diameter. 6. A cube is a solid figure contained by six equal squares. 8. The axis of a... | |
 | Charles William Hackley - Geometry - 1847 - 248 pages
...Quadrangular, Pentagonal. &c., according as their base is a triangle, quadrilateral, pentagon, &c. 5. A Sphere is a solid figure described by the revolution...semicircle about its diameter, which remains unmoved. The moving semicircle is called the generatrix. 6. The Axis of a sphere is the fixed right line about... | |
 | Samuel Hunter Christie - 1847 - 172 pages
...are opposite are equal, similar, and parallel to one another; and the others are parallelograms. 16. A Sphere is a solid figure described by the revolution...of a semicircle about its diameter, which remains fixed. 17. The Axis of a sphere is the fixed straight line about which the semicircle revolves. 18.... | |
 | William Vogdes - Arithmetic - 1847 - 324 pages
...ellipsis is called the tranverse, and the shortest the conjugate. 44. A sphere or globe is a solid described by the revolution of a semicircle about its diameter, which remains fixed 45. The diameter of a sphere is a right line passing through the centre, and terminated on each... | |
 | Euclides - 1848 - 52 pages
...that are opposite are equal, similar, and parallel to one another; and the others parallelograms. XIV. A sphere is a solid figure described by the revolution...semicircle about its diameter, which remains unmoved. XV. The axis of a sphere is the fixed straight line about which the semicircle revolves. XVI. The centre... | |
 | John Bonnycastle - Geometry - 1848 - 320 pages
...quadrangular pyramid ; when a pentagon, it is called a pentagonal pyramid, &c. 8. A sphere is a solid described by the revolution of a semicircle about its diameter, which remains fixed. 9. The centre of a sphere is a point within the figure, everywhere equally distant from the... | |
 | Almon Ticknor - Measurement - 1849 - 156 pages
...as ABODE. When the base is a triangle, it is called a triangular pyramid, &c. 7. A sphere is a solid described by the revolution of a semicircle about its diameter, which remains fixed ; as ABC D. The centre of a sphere is a point within the figure, equally distant from every part... | |
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A sphere is a solid figure described by the revolution of a semicircle about its diameter, which remains unmoved. 
