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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. "
Lessons on the delineation of form - Σελίδα 65
των Charles Richson - 1848
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Elements of Geometry, Conic Sections, and Plane Trigonometry

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...rectangle describes the convex surface. 3. A cone is a solid described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed. The base of the cone is the circle described by that side containing the right angle, which revolves....

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Euclides, James Hamblin Smith - 1872 - 376 σελίδες
...which passes through the centre, and is terminated both ways by the superficies of the sphere. XVIII. 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....

The Geometry of Conics

Charles Taylor - 1873 - 156 σελίδες
...CONE. 264. EUCLID defines a " Cone" as 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. The fixed side is called the Axis and the fixed angular point the Vertex of the Cone. It is evident...

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Euclides - 1874 - 342 σελίδες
...which passes through the centre, and is terminated both ways by the superficies of the sphere. 18. A cone is a solid figure described by the revolution of a rightangled triangle about one of the sides containing the right angle, which side remains fixed. If...

On Intelligence, Τόμος 2

Hippolyte Taine - 1875 - 324 σελίδες
...the revolution of the semicircle about its diameter, of the rectangle about one of its sides, of the right angled triangle about one of the sides containing the right angle, we form the sphere, the cylinder, the cone ; by sections of the cone, we form the ellipse, parabola,...

Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1876 - 446 σελίδες
...which passes through the center, and is terminated both ways by the superficies of the sphere. XVIII. A cone is a solid figure described by the revolution of a rightangled triangle about one of the sides containing the right angle, which side remains fixed. If...

A graduated course of problems in practical plane and solid geometry

James Martin (of the Wedgwood inst, Burslem.) - 1876 - 334 σελίδες
...the revolution of a semicircle about its diameter, which remains unmoved" (Euc. XI., Def. 14). (5.) " A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containfng the right angle, which side remains fixed....

The Elements of Euclid for the Use of Schools and Colleges: With Notes, an ...

Isaac Todhunter - 1880 - 426 σελίδες
...which passes through the centre, and is terminated both ways by the superficies of the sphere. 18. 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....

The Scientific and Literary Treasury

Samuel Maunder - 1880 - 904 σελίδες
...the others plane parallelograms. A sphere le a solid figure described by the revolution 3f я circle. A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle. A cylinder is a solid figure...

Conic Sections Treated Geometrically

S. Holker Haslam, Joseph Edwards - 1881 - 168 σελίδες
...Results (o), (0), (7), should be remembered. (7) 81 CHAPTER VII. THE RIGHT CIRCULAR CONE. Def. — ' 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.'...




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