 | Charles Hutton - 1815 - 686 Seiten
...of a pyramid, is found by adding together the areas of all the triangles which form that surface. 5. If a pyramid be cut by a plane parallel to the base, the section will be a plane figure similar to the base; and these two figures will be in proportion... | |
 | Timothy Walker - 1829 - 156 Seiten
...the measure of the prism. We shall divide the reasoning into four distinct propositions. DEM. 1. — If a pyramid be cut by a plane parallel to the base, the section is a polygon similar to the base. Let GHIKL (fig. 93) be a section F 93 parallel to the... | |
 | Thomas Holliday - 1838 - 404 Seiten
...of a cone or pyramid may be found by dividing three times the solidity by the area of the bate. 6. If a pyramid be cut by a plane parallel to the base, the section will be similar to tbe base, and the section and the base will be to each other as the... | |
 | Charles Davies - 1840 - 264 Seiten
...planes NP and SV, parallel to the base, the polygons NP, and SV, will each be equal to the base. 17. If a pyramid be cut by a plane parallel to the base, the section will be similar to the base. Thus, if the pyramid $ — ABCDE, be cut by the plane abode... | |
 | Samuel Hunter Christie - 1847 - 172 Seiten
...ratio of the same sides; that is, in the triplicate ratio of the homologous sides. PROP. LXIII. THEOR. If a pyramid be cut by a plane parallel to the base, the section will be similar to the base; and this section and the base will be to one another in the... | |
 | Charles Davies - 1850 - 238 Seiten
...section of a cylinder, by a plane parallel to the base, is a circle equal to the base. THEOREM IV. If a pyramid be cut by a plane parallel to the base, I. The edges and altitude will be divided proportionally. II. The section will be a polygon similar... | |
 | Charles Davies - 1850 - 218 Seiten
...section of a cylinder, by a plane parallel to the base, is a circle equal to the base. THEOREM IV. If a pyramid be cut by a plane parallel to the base, I. The edges and altitude will be divided proportionally. II. The section will be a polygon similar... | |
 | Charles Davies - 1886 - 340 Seiten
...section of a cylinder, by a plane parallel to the base, is a circle equal to the base. THEOREM 1T. If a pyramid be cut by a plane parallel to the base, I. The edges and altitude will be divided proportionally. II. The section will be a polygon similar... | |
 | Adrien Marie Legendre - 1863 - 464 Seiten
...Every section of a prism, parallel to the bases, is equal to either base. PROPOSITION III. THEOREM. If a pyramid be cut by a plane parallel to the base : 1°. The edges and the altitude will be divided proportionally : 2°. The section will be a polygon... | |
 | Edward Brooks - 1868 - 284 Seiten
...into one-half of the slant height SH; that is, the convex surface of the pyramid equals THEOREM IX. If a pyramid be cut by a plane parallel to the base; 1. The edges and altitude will be divided proportionally. 2. The section will be a polygon similar... | |
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The upper end of the frustum of a pyramid or cone is called the upper base... 
