 | Encyclopaedia Americana - 1830 - 632 pages
...pyramid, according to the definition of a pyramid. Cones are either perpeiulicuiar, if the axis, that is, the line from the vertex to the centre of the base, stands perpendicularly on the base ; or uliUt/iir. or sriilrnnus. if tho axis does not form a right... | |
 | Luke Hebert - Industrial arts - 1835 - 816 pages
...through the centre, and terminating at the circumference on the opposite sides. The axis of a cone is the line from the vertex to the centre of the base. The axis of a cglinder is the line from the centre of the one end to that of the other. Transverse axis,... | |
 | Francis Lieber, Edward Wigglesworth - Encyclopedias and dictionaries - 1835 - 630 pages
...pyramid, according to the definition of a pyramid. Cones arc either perpendicular, if the axis, that is, the line from the vertex to the centre of the base, stands perpendicularly on the base ; or oiditfiu, or scalenous, if the axis does not form a right angle... | |
 | Luke Hebert - Industrial arts - 1836 - 814 pages
...through the centre, and terminating at the circumference on the opposite sides. The axis of a cone is the line from the vertex to the centre of the base. The axis cf a cylinder is the line from the centre of the one end to that of the other. Transverse axis,... | |
 | Samuel Earnshaw - Differential equations, Partial - 1881 - 602 pages
...Ctmica p. 9. Geminua lived about 150 BC (Cantor p. 52). J Collectio lib. VII. §30 (vol II. p. 672, ed. Hultsch). circle : the term Cone is used specially...(prop. 5). Any plane at right angles to the plane of the triangle through the axis meets the conical surface in general in one of the three curves formerly... | |
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... or scalenous, if the axis does not form a right angle with the base. If a cone is cut parallel with its base, the section, of course, is a circle : if, however, the section is made obliquely, that is, nearer to the base at one... 