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 Bøker Bok 1–10 av 40 på ... side of the triangle, CB, which remains fixed, is called the axis, or altitude...
... side of the triangle, CB, which remains fixed, is called the axis, or altitude of the cone, and the point C, the vertex of the cone21 If a cone be cut by a plane parallel to the base, the section will be a circle...
Elements of Geometry and Trigonometry - Side 136
av C. Davies - 1867
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## A Philosophical and Mathematical Dictionary: Containing an ..., Volum 2

Charles Hutton - 1815
...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 to c&ch other as the...
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## The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith, William Hawney - 1817
...BD, the base of the triangle, is a chord, or diameter, of the circular base AB c » of the cone. 4. If a cone be cut by a plane parallel to the base, the section will be 11 circle. Thus, if the cone ABE, be cut by a plane parallel to AB, the section will be a circle, »f...
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## A Treatise on Practical Mensuration in Eight Parts ...

Anthony Nesbit - 1824 - 434 sider
...cone, and any part of the base, the section will be a triangle. 3. If a cone be cut into two parts, by a plane parallel to the base, the section will be a circle. 4. If a cone be cut by a plane passing through its two slant sides, in an oblique direction, the section...
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## Library of Useful Knowledge: Natural Philosophy...

1829
...science which treats of the proper, ties of certain curve» that arc formed by 1> the cutting of a cone. If a cone be cut by a plane parallel to the base, the section (or flat surface of the cut) will be a circle; and if it be cut by a plane passing through the vertex,...
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## Elements of geometry: Being chiefly a selection from Playfair's geometry

John Playfair - 1829 - 186 sider
...two equal prisms by the plane CDEF. Therefore, if a solid &c. QED PROPOSITION IV. THEOREM. If a prism be cut by a plane parallel to the base the section will be equal and like to the base Let LB be a prism, of which the base is ABCDE, and a section parallel to...
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## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - 1829 - 252 sider
...plane which also cuts the base, the section will be a triangle. 6. If a cone be cut into two parts, by a plane parallel to the base, the section will be a circle. 1. If a cone be cut by a plane which passes through its two slant sides in an oblique direction, the...
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## A Complete System of Mensuration of Superfices and Solids, of All Regular ...

Tobias Ostrander - 1833 - 159 sider
...plane perpendicular to the base, the section will be a triangle. 6. If a cone be cut into two parts by a plane parallel to the base, the section will be a circle. 7. If a cone be cut by a plane which passes through its two slant sides in an oblique direction the...
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## A Complete System of Mensuration of Superficies and Solids, of All Regular ...

Tobias Ostrander - 1834 - 159 sider
...plane perpendicular to the base, the section will be a triangle. 6. If a cone be cut into two parts by a plane parallel to the base, the section will be a circle. 7. If a cone be cut by a plane which passes through its two slant sides in an 'oblique direction the...
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## The connexion of the physical sciences

Mary Somerville - 1834
...plane passing through the apex, the section will be a triangle. If the cone be cut through both sides by a plane parallel to the base, the section will be a circle. If the cone be cut slanting quite through both sides, the section will be an ellipse, B a A b,fig....
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## On the Connexion of the Physical Sciences

Mary Somerville - 1834 - 458 sider
...plane passing through the apex, the section will be a triangle. If the cone be cut through both sides by a plane parallel to the base, the section will be a circle. Fig. 3. Fig. 4. If the cone be cat slanting quite through both sides, the section will be an ellipse,...
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