 | Webster Wells - 1894 - عدد الصفحات: 400
...equivalent to one-half of a parallelogram having the same base and altitude. PROPOSITION VI. THEOREM. 317. The area of a trapezoid is equal to one-half the sum of its bases multiplied by its altitude. D Eb B Let ABCD be a trapezoid, having its altitude DE equal to a, and its bases AB and DC equal to... | |
 | George Albert Wentworth, George Anthony Hill - 1894 - عدد الصفحات: 150
...increased by twice the product of one of these sides and the projection of the other side upon it. 7. The area of a trapezoid is equal to one-half the sum of its parallel sides multiplied by its altitude. HARVARD COLLEGE, June, 1892. In solving problems use for... | |
 | George Albert Wentworth - 1896 - عدد الصفحات: 68
...bases ; any two triangles are to each other as the products of their bases by their altitudes. 371. The area of a trapezoid is equal to one-half the sum of the parallel sides multiplied by the altitude. 372. Cor. The area of a trapezoid is equal to the product... | |
 | Joseph Johnston Hardy - 1897 - عدد الصفحات: 398
...circumference to the diameter of a circle is a mean proportional between the segments of the diameter. 61. The area of a trapezoid is equal to one-half the sum of the parallel sides multiplied by the altitude. TRIGONOMETRY. leg . ¡, 4 -С- .= '. S>n SI — = ^"... | |
 | Webster Wells - 1898 - عدد الصفحات: 264
...triangles are to each other as the products of their bases by their altitudes. PROP. VI. THEOREM. 316. The area of a trapezoid is equal to one-half the sum of its bases multiplied by its altitude. AE b Given trapezoid ABCD, with its altitude DE equal to a, and its bases AB and DC equal to b and... | |
 | International Correspondence Schools - 1898 - عدد الصفحات: 518
...drawn perpendicular to AH, dividing the figure into trapezoids and the triangle HD K. The area of each trapezoid is equal to one-half the sum of its bases multiplied by its altitude, and the sum of their areas together with the area of the triangle is equivalent to the area of the... | |
 | Webster Wells - 1898 - عدد الصفحات: 250
...other as the products of their bases by their altitudes. PROP. VI. THEOREM. 316. The area of a tmpezoid is equal to one-half the sum of its bases multiplied by its altitude. a AE 1, B Given trapezoid ABCD, with its altitude DE equal to a, and its bases AB and DC equal to b... | |
 | Webster Wells - 1898 - عدد الصفحات: 284
...equivalent to one-half of a parallelogram having the same base and altitude. PROP. VI. THEOREM. 316. The area of a trapezoid is equal to one-half the sum of Us bases multiplied by its altitude. D b' c AE b B Given trapezoid ABCD, with its altitude DE equal... | |
 | Webster Wells - 1899 - عدد الصفحات: 450
...triangles are to each other as the products of their bases by their altitudes. PROP. VI. THEOREM. 316. The area of a trapezoid is equal to one-half the sum of its bases multiplied by its altitude. AE b B Given trapezoid ABCD, with its altitude DE equal to a, and its bases AB and DC equal to b and... | |
 | Webster Wells - 1899 - عدد الصفحات: 424
...the products of their bases by their altitudes. PLANE GEOMETRY. — BOOK IV. PROP. VI. THEOREM. 316. The area of a trapezoid is equal to one-half the sum of its bases multiplied by its altitude. Given trapezoid ABCD, with its altitude DE equal to a, and its bases AB and DC equal to b and b', respectively.... | |
| |
The area of a trapezoid is equal to one-half the sum of its bases multiplied by its altitude. 
