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" ... equally long and narrow parallel spaces, cut at equal intervals by lines at right angles to them, with a spare end division subdivided similarly, only at right angles to the other divisions, into ten small rectangles, each of which small rectangles,... "
Inventional Geometry: A Series of Problems, Intended to Familiarize the ... - Página 62
por William George Spencer - 1877 - 97 páginas
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Mensuration for Beginners: With Numerous Examples

Isaac Todhunter - 1869 - 296 páginas
...sum of the two. 4. The height of a pyramid is 1 6 inches, and its volume is 400 cubic inches : the pyramid is divided into two parts by a plane parallel to the base and distant 4 inches from it : find the volumes of the parts. The following examples involve the extraction...
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Inventional Geometry: A Series of Problems, Intended to Familiarize the ...

William George Spencer - 1876 - 97 páginas
...centre and the angle of the octagon, and prove the correctA scale having ita breadth divided into tea equally long and narrow parallel spaces, cut at equal...of that pyramid. 248. Make of one piece of card the frustuu of a pentagonal pyramid, and let the small end of the frustum contain one-half the surface...
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INVENTIONAL GEOMETRY: A SERIES OF PROBLEMS INTENDED TO FAMILIARIZE THE PUPIL ...

WILLIAM GEORGE SPENCER - 1877
...sides of a right-angled isosceles triangle are together equal to the square upon the hypothenuse. 240. Can you invent any method of proving to the eye that...frustum of that pyramid. 24:8. Make of one piece of caïd the frustum of a pentagonal pyramid, and let the small end of the frustum contain one-half the...
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Inventional Geometry: A Series of Problems Intended to Familiarize the Pupil ...

William George Spencer - 1886 - 97 páginas
...diagonal scale. 2i6. Make a diagonal scale that shall express a number consisting of three digits. With the assistance of a diagonal scale, construct...next the base is called a frustum of that pyramid. i 248. Make of one piece of card the frustum 249. Out of a piece of paper, Laving irregu.ar boundaries...
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A Textbook on Sheet-metal Pattern Drafting, Volumen1

1901
...a pyramid is equal to one-third of the volume of a prism having the same base and altitude. 22. If a pyramid is divided into two parts by a plane parallel to its base, the lower part is called a frustum of a pyramid. See Fig. 9. The two ends of a frustum are...
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Elements of Solid Geometry

William Herschel Bruce, Claude Carr Cody - 1912 - 110 páginas
...the altitude equal to the radius, of a right circular cylinder, to find the entire surface. Ex. 610. A pyramid is divided into two parts by a plane parallel to the base and bisecting the altitude. What is the ratio of the two parts ? PROPOSITION IX. THEOREM. 762. The...
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