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" The Slant height of a regular pyramid is the distance from the vertex to the middle of one of the sides of the base, or, if it be a cone, to the circumference of the base. "
The complete measurer: or, The whole art of measuring, containing the ... - Page 101
by Thomas Keith - 1817
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Plane and Solid Geometry

Edward Rutledge Robbins - Geometry - 1907 - 428 pages
...faces. The total area of a pyramid is the sum of the lateral area and the area of the base. The altitude of a pyramid is the perpendicular distance from the vertex to the plane of the base. A triangular pyramid is a pyramid whose base is a triangle. It is called also a...
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Solid Geometry, with Problems and Applications

Herbert Ellsworth Slaught, Nels Johann Lennes - Geometry, Solid - 1911 - 208 pages
...tetrahedron. In this case every face is a triangle, and any one may be taken as the base. The altitude of a pyramid is the perpendicular distance from the vertex to the base. A regular right pyramid, or simply a regular pyramid, is one whose base is a regular polygon...
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For grades VII-VIII

Fletcher Durell, Elizabeth Hall - Arithmetic - 1912 - 404 pages
...vertex. The triangles which meet at the vertex taken together form the lateral surface. The altitude of a pyramid is the perpendicular distance from the vertex to the base. A pyramid is triangular, quadrangular, pentagonal, etc., according as the base is a triangle,...
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Solid Geometry

John H. Williams, Kenneth P. Williams - Geometry, Solid - 1916 - 184 pages
...the lateral edges. The sum of the areas of the lateral faces is called the lateral area. The altitude of a pyramid is the perpendicular distance from the vertex to the plane of the base. 610. Pyramids are said to be triangular, quadrangular, and so on, according as their...
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Solid Geometry

Herbert Edwin Hawkes, William Arthur Luby, Frank Charles Touton - Geometry, Solid - 1922 - 216 pages
...sum of the areas of the lateral faces is the lateral area of the pyramid. 512. Altitude. The altitude of a pyramid is the perpendicular distance from the vertex to the plane of the base. QUERY 1. Can the altitude of a pyramid be equal to one of the lateral edges? SOLID...
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The New Century Book of Facts

Encyclopedias and dictionaries - 1928 - 1958 pages
...whose sides are triangles which have a common vertex, called the vertex of the pyramid. The altitude of a pyramid is the perpendicular distance from the vertex to the base. The volume of a pyramid is equal to the onethird the volume of a prism having the same base and...
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