 | Charles Vyse - Arithmetic - 1806 - 342 pages
...the three Sides of a Triangle are given, to find the Area. RULE. 3. From Half the Sum of the three Sides subtract each Side severally ; multiply the...Remainders continually together, and the Square Root of the last Produdl will be the Area of the Triangle, that is, ^++l= j = Half the Sum of the Sides'. 2... | |
 | Samuel Webber - Mathematics - 1808 - 466 pages
...the three sides together, and take half the sum ; from the halt. sum subtract each side separately ; multiply the half sum and the three remainders continually together ; and the square root of the last product will be the area of the triangle. • A triangle is half a parallelogram of the same... | |
 | Peter Nicholson - 1809 - 426 pages
...III. To find the area of a triangle, whose three sides only are given. From the half sum of the three sides, subtract each side severally; multiply the half sum and the three remainders together, and the square root of the product will be the area required. EXAMPLE I. Rcquireth the area... | |
 | John Gummere - Surveying - 1814 - 398 pages
...find the area of a triangle, when the three sides are. given. % RULE; From half the sum of the three sides subtract each side severally ; multiply the half sum and the three remainders contiuually together, and the square root of the last product will be the area.* * DEMONSTRATION. Let... | |
 | Jeremiah Day - Logarithms - 1815 - 172 pages
...For finding the area of a triangle, then, when the three sides are given, we have this general rule ; From half the sum of the sides, subtract each side severally ; multiply together the half sum and the three remainders ; and •extract the square root of the product. SECTIOK... | |
 | Jeremiah Day - Measurement - 1815 - 388 pages
...finding the area of a triangle, then, when the three sides are given, we -have this general rule ; from half the sum of the sides, subtract each side severally ; multiply together the half sum and the three remainders ; and extract the square root cf the product. ,, . SECTION... | |
 | John Gummere - Surveying - 1817 - 384 pages
...triangle, when the three sides are given. RULE. From half the sum of the three sides subtract each sifle severally ; multiply the half sum and the three remainders continually together, and the square root of the last product will be the area. * » DEMONSTRATION. Let ABC, Fig. 69, be the triangle. Bisect any... | |
 | Anthony Nesbit - Surveying - 1824 - 476 pages
...the area of a triangle, the three sides only of which are given. RULE. From half the sum of the three sides subtract each side severally ; multiply the...remainders continually together; and the square root of the last product will be the area of the triangle. Jvofe t. If a triangle be accurately laid down,... | |
 | Jeremiah Day - Geometry - 1824 - 440 pages
...finding the area of a triangle, then, when the three sides are given, we have this general rule -, From half the sum of the sides, subtract each side severally ; multiply togetfar the half sum and the three remainders } and . retract the square root of the product. , SECTION... | |
 | John Nicholson - Machinery - 1825 - 822 pages
...the three sides together, and take half the sum ; from the half sum subtract each side separately; multiply the half sum and the three remainders continually together ; and the square root of the last product will be the area of the triangle. Ex. Required the area of the triangle whose base... | |
| |
From half the sum of the three sides subtract each side severally; multiply the half sum and the three remainders continually together, and the square root of the last product will be the area.* * DEMONSTRATION. 
