Elements of Geometry and Trigonometry |
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Page 5
Planes and Solid Angles , Polyedrons , The Proportions of Figures and the Measurement of Areas , - Problems relating to the Fourth Book , Oman BOOK V. Regular Polygons and the Measurement of the Circle , BOOK VI .
Planes and Solid Angles , Polyedrons , The Proportions of Figures and the Measurement of Areas , - Problems relating to the Fourth Book , Oman BOOK V. Regular Polygons and the Measurement of the Circle , BOOK VI .
Page 9
A solid or body is that which has length , breadth , and thickness ; and therefore combines the three dimensions of extension . 9. When two straight lines , AB , AC , 2 The principles,
A solid or body is that which has length , breadth , and thickness ; and therefore combines the three dimensions of extension . 9. When two straight lines , AB , AC , 2 The principles,
Page 96
therefore the product of three sides of a triangle is equal to its area multiplied by twice the diameter of the circumscribed circle . The product of three lines is sometimes called a solid , for a reason that shall be seen afterwards .
therefore the product of three sides of a triangle is equal to its area multiplied by twice the diameter of the circumscribed circle . The product of three lines is sometimes called a solid , for a reason that shall be seen afterwards .
Page 125
... whole circumference must be 3.1415926 , when the diameter is 1 : hence the ratio of the circumference to the diameter , formerly expressed by π , is equal to 3.1415926 . BOOK VI . PLANES AND SOLID ANGLES . Definitions . BOOK V. 125.
... whole circumference must be 3.1415926 , when the diameter is 1 : hence the ratio of the circumference to the diameter , formerly expressed by π , is equal to 3.1415926 . BOOK VI . PLANES AND SOLID ANGLES . Definitions . BOOK V. 125.
Page 126
PLANES AND SOLID ANGLES . Definitions . 1. A straight line is perpendicular to a plane , when it is perpendicular to all the straight lines which pass through its foot in the plane . Conversely , the plane is perpendicular to the line .
PLANES AND SOLID ANGLES . Definitions . 1. A straight line is perpendicular to a plane , when it is perpendicular to all the straight lines which pass through its foot in the plane . Conversely , the plane is perpendicular to the line .
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Elements of Geometry and Trigonometry from the Works of A. M. Legendre A. M. Legendre No preview available - 2017 |
Common terms and phrases
ABCD adjacent altitude base become Book called centre chord circle circumference circumscribed common cone consequently construction contained corresponding Cosine Cotang cylinder described diameter difference distance divided draw drawn equal equation equivalent evident expressed extremities fall figure follows formed formulas four frustum give given gles greater half hence homologous included inscribed intersection less likewise logarithm manner means measured meet middle multiplied opposite parallel parallelogram parallelopipedon pass perpendicular plane polygon prism PROBLEM produced Prop proportional PROPOSITION pyramid quantities radii radius ratio reason rectangle regular remaining right angles Scholium segment shown sides similar sine solid solid angle sphere spherical triangle square straight line Suppose surface taken tang tangent THEOREM third triangle triangle ABC vertex whole
Bibliographic information
| Title | Elements of Geometry and Trigonometry |
| Author | Adrien Marie Legendre |
| Editor | Charles Davies |
| Translated by | David Brewster |
| Edition | 4 |
| Publisher | A.S. Barnes and Company, 1834 |
| Original from | Harvard University |
| Digitized | 9 Dec 2008 |
| Length | 359 pages |
| Export Citation | BiBTeX EndNote RefMan |