 | Charles Vyse - 1785 - 350 Seiten
...RULE, 3. From Half the Burn of the three Sides fubtnuft each Side feverally ; multiply the Half Sura and the three Remainders continually together, and the Square Root of the laft ProducT. will be the Area 6f the Triangle, that is, * • Tc— 2. *=Half the Sum of the Sides.... | |
 | 1801 - 658 Seiten
...the sum of any two opposite angles in it is equal to two right angles, or i8r°. Multiply the four remainders continually together, and the square root of the last product will be the area of die trar < » pezmm. EXAMPLE^. In order to, facilitate the demonstration of the rule, it is thought... | |
 | Charles Vyse - 1806 - 342 Seiten
...let at per Acre ? Case 2. When the three Sides of a Triangle are given, to find the Area. RULE. 3. From Half the Sum of the three Sides subtract each...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 Then let... | |
 | Samuel Webber - 1808 - 466 Seiten
...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...the square root of the last product will be the area of the triangle. • A triangle is half a parallelogram of the same base and altitude,) Euc. I. 41)... | |
 | John Gummere - 1814 - 398 Seiten
...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 ABC, Fig. 69, be llje triangle. Bisect any two of the angles, BAC, ABC, by the... | |
 | John Gummere - 1817 - 384 Seiten
...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...square root of the last product will be the area. * » DEMONSTRATION. Let ABC, Fig. 69, be the triangle. Bisect any two of the angles, BAC, ABC, by the... | |
 | John Gummere - 1817 - 392 Seiten
...when the three sides are given. RULE. S From half the sum of Nthe three sides subtract each mainders continually together, and the square root of the last product will be the area.* * DEMONSTRATION. Let ABC, Fig. 69, be the triangle. Bisect .any two of the angles, B AC, ABC, by the... | |
 | Anthony Nesbit - 1824 - 476 Seiten
...4*. 7 \d. , PROBLEM V. To find the area of a triangle, the three sides only of which are given. RULE. From half the sum of the three sides subtract each...the square root of the last product will be the area of the triangle. Jvofe t. If a triangle be accurately laid down, from a pretty large scale of iqual... | |
 | George Curtis - 1824 - 132 Seiten
...side, severally, noting down the remainders ; then multiply the half sum and the three remalftders continually together, and the square root of the last product will be the Area. EXAMPLE. Suppose a Triangle whose three sides are .30, 26, and 22. Sides, 30^-25+22 sum 78-^2=39=—... | |
 | John Nicholson - 1825 - 822 Seiten
...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...the square root of the last product will be the area of the triangle. Ex. Required the area of the triangle whose base is 6 feet, and perpendicular height... | |
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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. 
