...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...

...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...

...colog (c + a) = 8.004 36 2). S. (10136 log tan \B - 9.00218 \B -5° 44' 21" B =11° 29' A =7S°31' § 16. AREA OF THE RIGHT TRIANGLE. It is shown in Geometry...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...

...8.00436 2)8.00436 logtan}fi =9.00218 }5 =5° 44' 21" B =11° 29' A =78° 31' TRIGONOMETRY. § 16. ABEA OF THE RIGHT TRIANGLE. It is shown in Geometry that...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....

...=0.00000 colog (c + a) = 8.00436 2 )S. 00438 log tan IB =9.0021.8 B =5° 44' 21" B TRIGONOMETRY. § 16. AREA OF THE RIGHT TRIANGLE. It is shown in Geometry...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....

...triangle whose vertices are the points (2, 1), (3, - 2), (- 4, - 1). A ns. 10. It is shown in Elementary Geometry that the area of a triangle is equal to one-half the product of its base and its altitude ; hence this problem may be solved by performing the following operations...

...(с + a)] log (с -а) =0.00000 colog (с + a) = 8.00436 2)8.00436 TRIGONOMETRY. § 16. AREA OF THÉ RIGHT TRIANGLE. It is shown in Geometry that the area...if a and b denote the legs of a right triangle, and .Fthe area, F= } ab. By means of this formula the area may always be found when a and b are given or...

...equal." 3. Prove that the sum of the angles of any triangle is equal to two right angles. 4. Prove that the area of a triangle is equal to one-half the product of its base and altitude. 5. Prove that the side of a regular inscribed hexagon is equal to the radius...

...altitude of 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...

...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,...