 | James Thompson - 1808 - 176 σελίδες
...area of a trafiezoid, or quadrangle, <u'o cf •whose opposite sides are parallel. RULE — Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product •will be the area. EXAMPLES. 13. Required the area of a trapezoid whose parallel... | |
 | Matthew Iley - 1820 - 512 σελίδες
...PROBLEM VII To find the Area of a Quadrilateral wherein two unequal Sides are Parallel to one another. RULE. Multiply half the sum of the parallel sides by the perpendicular distance between them, and the product will be the area. Let ABCD be a quadrilateral, wherein AC and BD are parallel but unequal;... | |
 | Anthony Nesbit - 1824 - 476 σελίδες
...is its area ? Ans. 1131^.2 in. 9 pa. PROBLEM VIII. To find the area of a Irapezoid. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. Or, half the sum of the sides multiplied by their distance will... | |
 | Thomas Hornby (land surveyor.) - 1827 - 318 σελίδες
...00000000 2.40000 40 16.00000 Ans. 0A. 2n. 16p. PROBLEM 3. To find the Area of a Trapezoid. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. EXAMPLE. Required the area of the trapezoid AB CD, whose parallel... | |
 | John Bonnycastle - 1829 - 256 σελίδες
...the area of a trapezoid, or a quadrangle, two of whose opposite sides are parallel. RULE.* Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the EXAMPLES. 1. Required the area of the trapezoid ABCD, whose sides... | |
 | Edinburgh encyclopaedia - 1830 - 856 σελίδες
...trapezoid is a quadrilateral, of which two opposite sides are parallel but not equal. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product is the area. In the trapezoid ABCD, draw the diagonal AC, and from its extremities... | |
 | Alexander Ingram - 1830 - 458 σελίδες
...acres 3 roods 21 perches 26 yards 5 feet. QUADRILATERALS. Piion. VII. To find the area of a trapeziod. RULE. Multiply half the sum of the parallel sides by the perpendicular from the one to the other. For the triangles into which it may be divided have the same perpendicular.... | |
 | John Bennett (Engineer) - 1833 - 488 σελίδες
...MEASURER, Practical. I'RUBLEM V. To find the area of a quadrangle ABCD, having two parellel sides AB, DC. B RULE. Multiply half the sum of the parallel sides by the perpendicular between them ; and the product will give the area. EXAMPLE. Let the parallel sides AB, DC, and the... | |
 | William Galbraith - 1834 - 454 σελίδες
...logarithms. 3. Trapezium. — Multiply the base into half the sum of the perpendiculars. 4. Trapezoid. — Multiply half the sum of the parallel sides by the perpendicular distance between them. fi. Irregular Polygon. — Divide it into triangles, find their areas, the sum of these will be the... | |
 | Robert Simson (master of Colebrooke house acad, Islington.) - 1838 - 206 σελίδες
...hypotenuse. ^ 16s + 122 = 20, the length of the hypotenuse. HoW do you find the area of a trapezoid ? Multiply half the sum of the parallel sides by the perpendicular distance between them, and the product will be the area of the trapezoid. What is the area of a trapezoid, its parallel sides... | |
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Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. 
