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" A right circular cone is often called a cone of revolution, because it can be generated by the revolution of a right-angled triangle about one of its shorter sides. "
An essay on mechanical geometry, explanatory of a set of models - Page 37
by Benjamin Donne - 1796
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A Treatise on Arithmetic ...

Noble Heath - 1855 - 468 pages
...inches ? Ans. The larger orange is 3| times the size of the smaller. 608. The cone is a solid figure generated by the revolution of a right-angled triangle about one of the sides containing the Tight angle. To find the slant surface of a cone : Multiply the circumference...
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A Treatise on Arithmetic: Through which the Entire Science Can be Most ...

Noble Heath - Arithmetic - 1856 - 472 pages
...inches? Ans. The larger orange is 3| times the size of the smaller. 608. The cone is a solid figure generated by the revolution of a right-angled triangle about one of the sides containing the right angle. To find the slant surface of a cone : Multiply the circumference...
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Rifles and Rifle Practice: An Elementary Treatise Upon the Theory of Rifle ...

Cadmus Marcellus Wilcox - Rifle practice - 1859 - 308 pages
...or generatrix of the cylinder. FIG. 87.— Cylinder. CD, axis ; AE, generatrix. A cone is a solid, generated by the revolution of a right-angled triangle about one of the sides of the right angle : this side is called the axis or altitude. In the revolution that the rectangled...
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An elementary treatise on mensuration

Benjamin Theophilus Moore - Measurement - 1863 - 320 pages
...find the area of the surface, and the volume, of a circular cone. DBF. A circular cone is the solid generated by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed : this line is called the axis of the cone....
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Elements of Geometry and Trigonometry

C. Davies - 1867 - 342 pages
...parallel to the base, the section will be a circle equal to the base2 AC o NE is a volume which may be generated by the revolution of a right-angled triangle about one of its sides adjacent to the right angleThus, if the right-angled triangle SBA be revolved around SB as...
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The Theory of Navigation and Nautical Astronomy: Together with the Elements ...

William Thomas Read - Nautical astronomy - 1869 - 176 pages
...point of more than two plane angles. 5. A sphere is a solid figure whose diameters are all equal ; it may be conceived to be generated by the revolution of a semicircle about its diameter. 6. A great circle is one drawn upon the surface of a sphere dividing...
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Elements of Geometry, Conic Sections, and Plane Trigonometry

Elias Loomis - Conic sections - 1877 - 458 pages
...circular cone whose axis is perpendicular to its base. It is called a cone of revolution, because it may be generated by the revolution of a right-angled triangle about one of its perpendicular sides as an axis. An oblique circular cone is a cone in which the directrix is a...
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Practical plane geometry and projection. [2 issues].

Henry Angel - 1880 - 360 pages
...whenever a cone is indicated in these problems, only one-half of the above surface is meant, such as would be generated by the revolution of a right-angled triangle, about one of the sides containing the right angle ; but as will be seen in future problems, it is better to consider...
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Practical Plane Geometry and Projection: For Science Classes ..., Volume 1

Henry Angel - Geometry, Plane - 1880 - 372 pages
...whenever a cone is indicated in these problems, only one-half of the above surface is meant, such as would be generated by the revolution of a right-angled triangle, about one of the sides containing the right angle ; but as will be seen in future problems, it is better to consider...
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The Imperial dictionary, on the basis of Webster's English dictionary, Volume 3

John Ogilvie - 1883 - 830 pages
...contained under a single surface, which in every part is equally distant from a point called its centre. It may be conceived to be generated by the revolution of a semicircle about its diameter, which remains flxed, and which is hence called the " - - • of the...
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