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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 39
by Benjamin Donne - 1796
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The Most General School-assistant: Containing, a Complete System of ...

Gilbert Dyer - Arithmetic - 1770 - 191 pages
...be fuppofcd Infini'e, it will then be called a Cane : Or, 2I1 . A CONE may be defined to be a Solid, generated by the Revolution of a right-angled Triangle, about one of the Sides which contains the Right Angle. 212. A SPHERE is a Solid made by the Rotation of a Semi Circle...
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Encyclopaedia Perthensis; Or Universal Dictionary of the Arts ..., Volume 10

Encyclopedias and dictionaries - 1816
...meeting at a point above tin bafe, call, d the VERTEX of the pyramid. Fig. 6Z. 78. A CONE is a folid, conceived to be generated by the revolution of a right-angled triangle about its perpendicular, which fixed line is called the Axis of the cone. Fif. 69. 79. A SPHERE is a folid...
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The Cyclopędia, Or, Universal Dictionary of Arts, Sciences, and ..., Volume 34

Abraham Rees - Art - 1819 - 754 pages
...reprefented by FGD E. PROB. XIII. To find the covering of the curved fuperficies of a cone, fuch as may be generated by the revolution of a right-angled triangle about one of its perpendicular legs. With a radius equal to the flant fide of the cone dcfcribe an arc. Make the...
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Elements of Science and Art: Being a Familiar Introduction to ..., Volume 2

John Imison - Art - 1822 - 488 pages
...and its sides a convex surface, and terminating in a point A called the vertex or apex of the cone. It may be conceived to be generated by the revolution of a right-angled triangle about its perpendicular. A line drawn from the vertex to the centre of the base, is the axis of the cone....
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The Operative Mechanic, and British Machinist: Being a Practical ..., Volume 1

John Nicholson - Machinery - 1825 - 838 pages
...hase, and its sides a convex surface, terminating in a point A, called the vertex or apex of the cone. It may be conceived to be generated by the revolution of a right-angled triangle about its perpendicular. 65. A line drawn from the vertex to the centre of the base is the axis of the cone....
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Elements of Geometry Upon the Inductive Method: To which is Added an ...

James Hayward - Geometry - 1829 - 218 pages
...the elementary treatises, are the right cone, the right cylinder and the sphere. The right cone is generated by the revolution of a right-angled triangle about one of the sides containing the right-angle, as the triangle SCA (Jig. 140) about the Fig.140. side SC. The hypothenuse...
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Elements of Descriptive Geometry: With Their Application to Spherical ...

Charles Davies - Geometry, Descriptive - 1835 - 260 pages
...perpendicular to its base, If the base be a circle, such cone is a right cone with a circular base ; it can be generated by the revolution of a right-angled triangle about one of its legs, and its rectilinear elements make equal angles with the axis. This is the kind of cone treated...
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Elements of Descriptive Geometry: With Their Application to Spherical ...

Charles Davies - Geometry, Descriptive - 1840 - 264 pages
...perpendicular to its base. If the base be a circle, such cone is a right cone with a circular base ; it can be generated by the revolution of a right-angled triangle about one of its legs, and its rectilinear elements make equal angles with the axis. This is the kind of cone treated...
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The Elements of Euclid. Books I.-VI.; XI. 1-21 XII. 1-2. A New Text ..., Book 1

Euclides - Geometry - 1853 - 334 pages
...which is terminated both ways by the surface of the sphere. XVIII. A right cone is the solid figure generated by the revolution of a right-angled triangle about one of the sides including the right angle, which remains fixed. The cone is called a right-angled, an obtuse-angled,...
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Elements of geometry and mensuration

Thomas Lund - Geometry - 1854 - 518 pages
...area may then be obtained by methods already given. DBF. A Right Cone is a solid which may be supposed to be generated by the revolution of a right-angled triangle about one of its shorter sides as an axis, the conical surface being generated by the hypothenuse : the base of...
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