 VI. To find the content of a triangular piece of ground, Multiply the base by half the perpendicular, or the perpendicular by half the base ; or take half the product of the base into the perpendicular. The reason hereof is plain, from cor.  A Treatise of Practical Surveying, ... - Pàgina 182per Robert Gibson - 1808 - 440 pàginesVisualització completa - Sobre aquest llibre
 | Robert Gibson - 1832 - 290 pàgines
...90°, whose sine is 1, this rule for them is the same as the first. PROBLEM VI. To find the contents of a triangular piece of ground. Multiply the base...product of the base into the perpendicular. The reason of this is plain from cor. 2, theo. 12, geom. EXAMPLE. PL. I. fig. 16. Let ABC be a triangular piece... | |
 | Abel Flint - 1835 - 366 pàgines
...Drop a perpendicular from one of the angles to its opposite side, which may be called the base ; then multiply the base by half the perpendicular ; or the perpendicular by half the base ; the product will be the area. Or, multiply the whole base by the whole perpendicular, and half the... | |
 | Luther Ainsworth - 1837 - 306 pàgines
...from the angle opposite to it, and half the product will be the answer. Or in measuring any angle, multiply the base by half the perpendicular, or the perpendicular by half the base, and the product is the area. Q. What reason can you give for this RULE of measuring triangles ? A.... | |
 | Joseph Stockton - 1839 - 218 pàgines
...perches=6 acres 3 qr. 18,15 + perches. 3d. To find the content of a triangular piece of ground. RULE. Multiply the base by half the perpendicular, or 'the...half the product of the base into the perpendicular. EXAMPLE. A BDC 1. Let A, B, C, be a triangular piece of ground, tha ongest sic « or base B, C, is... | |
 | John Gregory - 1842 - 328 pàgines
...multiplying the base AC by the perpendicular EB, and dividing the product by 2 ; or by multiplying the base by half the perpendicular, or the perpendicular by half the base. EXAMPLE. — The base AC is 600, and the perpendicular EB 300 links ; required the area. 600 300 300... | |
 | Joseph Bateman - 1852 - 376 pàgines
...to represent one square inch; half of this, therefore, constitutes the area of the triangle (p. 75). multiply the base by half the perpendicular, or the perpendicular by half the base ; the product in either ease will be the area. II.* — If the perpendicular is not known, subtract... | |
 | Anthony Nesbit - 1859 - 494 pàgines
...are given. RULE. Multiply the base by the perpendicular, and half the product will be the area. Or, multiply the base by half the perpendicular; or the perpendicular by half the base, and the product will be the area. Note I — If double the area or a triangle be divided by one of... | |
| |
