Elements of Geometry and Trigonometry: From the Works of A.M. Legendre |
From inside the book
Results 1-5 of 9
Page 179
... Prisms are named from the number of sides of their bases ; a triangular prism is one whose bases are triangles ; u pentangular prism is one whose bases are pentagons , & c . 7. A PARALLELO PIPEDON is a prism whose bases are ...
... Prisms are named from the number of sides of their bases ; a triangular prism is one whose bases are triangles ; u pentangular prism is one whose bases are pentagons , & c . 7. A PARALLELO PIPEDON is a prism whose bases are ...
Page 188
... triangular prisms . Let ABCD - H be a parallelopipedon , and let a plane be passed through the edges BF and DH then will the prisms ABD - H and BCD - II be equal in volume . For , through the vertices F and B let planes be passed ...
... triangular prisms . Let ABCD - H be a parallelopipedon , and let a plane be passed through the edges BF and DH then will the prisms ABD - H and BCD - II be equal in volume . For , through the vertices F and B let planes be passed ...
Page 189
... prism ( D. 2 , 4 ) , polyedrons Bad - h and Bcd - h . hence , the poly- as are also the ... prisms are equal in volume . In like manner , it may be shown that the ... triangular prism ABD - II , is equal to half of the parallelopipedon AG ...
... prism ( D. 2 , 4 ) , polyedrons Bad - h and Bcd - h . hence , the poly- as are also the ... prisms are equal in volume . In like manner , it may be shown that the ... triangular prism ABD - II , is equal to half of the parallelopipedon AG ...
Page 190
... triangular A B prisms AEI - M and BFK - L , we have the line AE equal and parallel to BF , and EI equal to FK ... prisms are equal ( P. V. ) If from the polyedron ABKE - H , we take away the prism BFK - L , there will remain the ...
... triangular A B prisms AEI - M and BFK - L , we have the line AE equal and parallel to BF , and EI equal to FK ... prisms are equal ( P. V. ) If from the polyedron ABKE - H , we take away the prism BFK - L , there will remain the ...
Page 197
... triangular prisms . These prisms will all have a common altitude equal to that of the given prism . K Now , the volume of any one of the BOOK VII . 197.
... triangular prisms . These prisms will all have a common altitude equal to that of the given prism . K Now , the volume of any one of the BOOK VII . 197.
Other editions - View all
Common terms and phrases
AB² ABCD AC² adjacent angles altitude apothem Applying logarithms base and altitude bisect centre chord circle circumference circumscribed coincide cone consequently convex surface corresponding cosec cosine Cotang cylinder denote diagonals diameter difference distance divided draw drawn edges equally distant feet find the area Formula frustum given angle given straight line greater hence homologous hypothenuse included angle interior angles intersection less Let ABC log sin lower base mantissa measured by half number of sides opposite parallel parallelogram parallelopipedon perimeter perpendicular plane MN polyedral angle polyedron prism PROPOSITION proved pyramid quadrant radii radius rectangle regular polygons right angles right-angled triangle Scholium secant segment semi-circumference side BC similar sine slant height sphere spherical polygon spherical triangle square subtracted Tang tangent THEOREM triangle ABC triangular prisms triedral angle upper base vertex vertices whence
Popular passages
Page 126 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Page 59 - A'B'C', and applying the law of cosines, we have cos a' = cos b' cos c' + sin b' sin c' cos A'. Remembering the relations a' = 180° -A, b' = 180° - B, etc. (this expression becomes cos A = — cos B cos C + sin B sin C cos a.
Page 18 - The circumference of every circle is supposed to be divided into 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, and these into thirds, fourths, &c.
Page 104 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Page 6 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Page 28 - If two triangles have two sides of the one equal to two sides of the...
Page 46 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 99 - The area of a parallelogram is equal to the product of its base and altitude.
Page 172 - If two planes are perpendicular to 'each other, a straight line drawn in one of them, perpendicular to their intersection, will be perpendicular to the other.
Page 214 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.