 | Encyclopedias and dictionaries - 1907 - 794 pages
...is the curve in which a plane cuts a cone, which is defined in Euclid's Elementa as " a solid figure described by the revolution of a right-angled triangle...one of the sides containing the right angle, which side remains fixed." Though the properties of conic sections can be investigated from this point of... | |
 | Louis Phillipe McCarty - Jīzah (Egypt) - 1907 - 602 pages
...its axis. A CYLINDER is a solid described by the revolution of a rectangle about one of its sides. A CONE is a solid described by the revolution of a right-angled triangle about one of its sides. A PYRAMID is a solid the base of which is any kind of a polygon, and its other faces triangles... | |
 | Alva Walker Stamper - Geometry - 1909 - 214 pages
...excellent mathematician of the first century BC, the following remarks: 'The ancients, defining a cone as the revolution of a right-angled triangle about one of the sides containing the right angle, naturally supposed also that all conics are right and there is only one kind of section in each —... | |
 | Charles Leonard-Stuart, George Jotham Hagar - Encyclopedias and dictionaries - 1912 - 666 pages
...an underground channel of some kind for the conveyance of water. Cone, in geometry, a solid figure described by the revolution of a rightangled triangle...one of the sides containing the right angle, which side remains fixed. Coney Island, a small island in the Borough of Brooklyn, about 10 miles SB of New... | |
 | Archimedes - Geometry - 1912 - 568 pages
...which are simply called cones without the qualifying adjective. A cone is there denned as the surface described by the revolution of a rightangled triangle...about one of the sides containing the right angle. Archimedes does not define a cone, but generally describes a right cone as an isosceles cone (KWVOS... | |
 | Joseph Harrison, George Albert Baxandall - Geometry, Descriptive - 1913 - 714 pages
...indefinitely, one on each side of the vertex. Definition 26. A right circular cone is the solid generated by the revolution of a right-angled triangle about one of the sides containing the right angle as axis. The circle generated by the other of the sides containing the right angle is called the base... | |
 | Sir Thomas Little Heath - Mathematics - 1921 - 612 pages
...actual practice. We learn on the authority of Geminus' that the ancients defined a cone as the surface described by the revolution of a right-angled triangle...about one of the sides containing the right angle, and that ibey knew no cones other than right cones. Of these they distinguished three kinds; according... | |
 | Sir Thomas Little Heath - Mathematics - 1921 - 608 pages
...actual practice. We learn on the authority of Geminus l that the ancients defined a cone as the surface described by the revolution of a right-angled triangle...about one of the sides containing the right angle, and that they knew no cones other than right cones. Of these they distinguished three kinds ; according... | |
 | H. E. Howard - Mathematics - 1926 - 192 pages
...its sides. In the same way we may regard the cone as being the solid " generated " by the rotation of a right-angled triangle about one of the sides containing the right angle. Thus, if the right-angled triangle ABC revolves about the side AC, it generates the cone represented... | |
 | R. H. Warn, John G. Horner - Crafts & Hobbies - 2002 - 292 pages
...centre, and is terminated both ways by the snperficies of the sphere. 60. A cone is a solid figure described by the revolution of a r.ight-angled triangle...one of the sides containing the right angle, which side remains fixed (Fig. 19). N.13. — If the fixod side be equal to the other side containing the... | |
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A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed. 
