## The Essentials of Geometry (solid) |

### From inside the book

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Page 319

Webster Wells. BOOK VIII . THE CYLINDER ,

Webster Wells. BOOK VIII . THE CYLINDER ,

**CONE**, AND SPHERE . DEFINITIONS . 540. A cylindrical ...**circular**cylinder is a cylinder whose base is a circle . A plane is said to be tangent to a cylinder 319 THE CYLINDER,**Cone**, and SPHERE. Page 324

... CONE . DEFINITIONS . 553. A conical surface is a surface generated by a moving straight line , which constantly ...

... CONE . DEFINITIONS . 553. A conical surface is a surface generated by a moving straight line , which constantly ...

**circular cone**is a cone whose base is a circle . The axis of a**circular cone**is a straight line 324 SOLID GEOMETRY ... Page 325

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**circular cone**is a**circular cone**whose axis is per- pendicular to its base . A frustum of a cone is a portion of a cone included between the base and a plane parallel to the base . The base of the cone is called the lower base , and ... Page 326

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**circular cone**made by a plane parallel to the base is a circle . B Given A'B'C ' a section of**circular cone**S - ABC , made by a plane to the base . To Prove A'B'C ' a O. Proof . Draw axis OS , intersecting plane A'B'C ' 326 SOLID ... Page 327

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**circular cone**passes through the centre of every section parallel to the base . PROP . VIII . THEOREM . 559. A plane drawn through an element of the lateral sur- face of a**circular cone**and a tangent ... cone . ( Prove THE CONE . 327.### Other editions - View all

### Common terms and phrases

ABCD Algebra altitude approaches the limit area ABC axis bisecting centre cents circle circular cone circular cylinder circumference circumscribed cone of revolution conical surface convex polyedron cube cylinder of revolution diameter diedral angle distance Draw lines entire surface equal parts occur equal spheres equally distant Find the area Find the volume frustum Geometry Given line given point homologous inscribed intersection lateral area lateral edges lateral faces lateral surface line drawn lune O-ABC parallel planes perimeter perpendicular plane determined Plane Geometry plane MN pole polyedral angle proof is left PROP Prove pupil radii radius rectangular parallelopiped regular polygon respectively sector sides slant height solid Solid Geometry spherical angle spherical polygon spherical pyramid spherical triangle straight line tangent tetraedron THEOREM total surface tri-rectangular triangular prism triedral vertex vertices Wells's Whence