A regular pyramid is one whose base is a regular polygon and whose vertex lies in the perpendicular erected at the center of the lsi.se. Mechanical drawing - Page 10by American School (Chicago, Ill.) - 1903Full view - About this book
| Euclid, Dionysius Lardner - Euclid's Elements - 1828 - 542 pages
...quadrangular or polygonal, according as the base is triangular, quadrangular or polygonal. (115) DBF. — A regular pyramid is one whose base is a regular polygon, and whose vertex is so placed that a perpendicular drawn from it to the plane of the base will meet that plane in the... | |
| Elias Loomis - Conic sections - 1857 - 242 pages
...is triangular, quadrangular, &c., according as the base is a triangle, a quadrilateral,. &c. , 13. A regular pyramid is one whose base is a regular polygon, and the perpendicular let fall from the vertex upon the base, passes through the center of the base. This... | |
| Elias Loomis - Conic sections - 1858 - 256 pages
...pyramid is triangular, quadrangular, &c., according as the base is a triangle, a quadrilateral, &c. 13. A regular pyramid is one whose base is a regular polygon, and the perpendicular let fall from the vertex upon the base, passes through the center of the base. This... | |
| Horatio Nelson Robinson - Geometry - 1860 - 470 pages
...Altitude of a pyramid is the perpendicular distance from its vertex to the plane of its base. 12. A Right Pyramid is one whose base is a regular polygon, and whose vertex is in the perpendicular to the base at its center. This perpendicular is called the axi» of the pyramid.... | |
| Evan Wilhelm Evans - Geometry - 1862 - 116 pages
...penBOOK III. 87 tagonal, etc., according as their bases are triangles, quadrilaterals, pentagons, etc. 2. A regular PYRAMID is one whose base is a regular polygon, and the triangular faces are equal and isosceles. 3. A CONE is a solid described by the revolution of a... | |
| Eli Todd Tappan - Geometry, Modern - 1864 - 288 pages
...demonstration is like that of analogous propositions in triangles and tetraedrons. REGULAR PYRAMIDS. 657. A REGULAR PYRAMID is one whose base is a regular polygon, and whose vertex is in the line perpendicular to the base at its center. 658. Corollary. — The lateral edges of a... | |
| Eli Todd Tappan - Geometry - 1868 - 432 pages
...demonstration is like that of analogous propositions in triangles and tetraedrons. REGULAR PYRAMIDS. 657. A REGULAR PYRAMID is one whose base is a regular polygon, and whose vertex is in the line perpendicular to the base at its center. 658. Corollary. — The lateral edges of a... | |
| William Chauvenet - Geometry - 1871 - 380 pages
...are triangles), is a tetraedron ; and any one of its faces may be taken as its base. 41. Definitions. A regular pyramid is one whose base is a regular polygon, and whose vertex is in the perpendicular to the base erected at the centre of the polygon. This perpendicular is called... | |
| Elias Loomis - Geometry - 1871 - 302 pages
...pyramid is triangular, quadrangular, &c., according as the base is a triangle, a quadrilateral, &c. 13. A regular pyramid is one whose base is a regular polygon, and the perpendicular let fall from the vertex upon the base, passes through the center of the base. This... | |
| Eli Todd Tappan - Geometry - 1873 - 288 pages
...demonstration is like that of analogous propositions in triangles and tetraedrons. REGULAR PYRAMIDS. 657. A REGULAR PYRAMID is one whose base is a regular polygon, and whose vertex is in the line perpendicular to the base at its center. 658. Corollary. — The lateral edges of a... | |
| |