 TRIANGLE The area of a triangle is equal to one-half the product of the base by the altitude ; therefore, if a and b denote the legs of a right triangle, and F the area, F = \ ab.  Plane and Spherical Trigonometry - Page 25by George Albert Wentworth - 1902 - 232 pagesFull view - About this book
 | William James Milne - Arithmetic - 1877 - 402 pages
...every triangle is one-half of a parallelogram of the same base and altitude. Therefore, RULE. — The area of a triangle is equal to one-half the product of the base by the altitude. When the three sides are given, the following is the rule: RULE. — From half the sum of the three... | |
 | William James Milne - Arithmetic - 1877 - 418 pages
...triangle is one-half of a parallelogram of the same base and altitude. Therefore, RULE.—The arear of a triangle is equal to one-half the product of the base by the attitude. When the three sides are given, the following is the rule: RULE.—From half the sum of the... | |
 | George Albert Wentworth - Trigonometry - 1884 - 330 pages
...44' 21" B =11° 29' A =7S°31' § 16. AREA OF THE RIGHT TRIANGLE. It is shown in Geometry that the area of a triangle is equal to one-half the product...if a and b denote the legs of a right triangle, and .Fthe area, ,-,_ By means of this formula the area may always be found when a and b are given or have... | |
 | George Albert Wentworth - 1887 - 206 pages
...=11° 29' A =78° 31' TRIGONOMETRY. § 16. ABEA OF THE RIGHT TRIANGLE. It is shown in Geometry that the area of a triangle is equal to one-half the product...denote the legs of a right triangle, and F the area, F=lab. By means of this formula the area may always be found when a and b are given or have been computed.... | |
 | George Albert Wentworth - 1887 - 346 pages
...B =5° 44' 21" B TRIGONOMETRY. § 16. AREA OF THE RIGHT TRIANGLE. It is shown in Geometry that the area of a triangle is equal to one-half the product...if a and b denote the legs of a right triangle, and area, By means of this formula the area may always be found when a and b are given or have been computed.... | |
 | Michigan. Department of Public Instruction - Education - 1892 - 524 pages
...the triangle, and its area. 7. What is a circle? A radius? An equilateral polygon? 8. Prove that the area of a triangle is equal to one-half the product of the base and altitude. ARITHMETIC. [First and Second Gtadee.] 1. Make and solve a problem illustrating an application... | |
 | William Shaffer Hall - Measurement - 1893 - 88 pages
...number of linear units in one line by the number of units of the same kind in the other line. Thus, the area of a triangle is equal to one-half the product of the number of linear units in the base, by the number of linear units in the altitude. The expression,... | |
 | George Albert Wentworth - Navigation - 1895 - 436 pages
...Case IV. See also § 12, Note. § 14. AREA OF THE RIGHT TRIANGLE. It is shown in Geometry that the area of a triangle is equal to one-half the product...denote the legs of a right triangle, and F the area, ™ . THE RIGHT TRIANGLE. For example : Find the area, having given : CASE I. (§ 13). Л = 34° 28',... | |
 | George Albert Wentworth - Plane trigonometry - 1896 - 272 pages
...under Case IV. See also 5 12, Note. § 14. AREA 0F THE RIGHT TRIANGLE. It is shown in Geometry that the area of a triangle is equal to one-half the product...denote the legs of a right triangle, and F the area, F By means of this formula the area may always be found when a and b are given or have been computed.... | |
 | George Albert Wentworth - Trigonometry - 1896 - 344 pages
...Case IV. See also § 12, Not«. § 14. AREA OF THE RIGHT TRIANGLE. It is shown in Geometry that the area of a triangle is equal to one-half the product...denote the legs of a right triangle, and F the area, F THE RIGHT TRIANGLE. For example : Find the area, having given : CASE I. (§ 13). A = 34° 28', с... | |
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