 | Francis M. Stalker, Charles Madison Curry, Walter W. Storms - 1900 - 718 σελίδες
...and BD C. The figure and the given distances show the base and altitude of each of these triangles. The area of a triangle is one-half the product of the base and altitude. In the triangle AED, AD(=40rd) is the base and KG(=46 rd) is the altitude. The 40X46 area is — 5... | |
 | 1900 - 654 σελίδες
...and BD С. The figure and the given distances show the base and altitude of each of these triangles. The area of a triangle is one-half the product of the base and altitude. In the triangle AED, AD(=40rd) is the base and EG(=46 rd) is the altitude. The 40X46 area is — ^... | |
 | Frank Castle - 1908 - 616 σελίδες
...into two equal parts by a diagonal (Fig. 52). Hence, when the base and height of a triangle are given, the area of a triangle is onehalf the product of the base and the height. As any side may be considered as the base of a triangle, the rule may be stated thus :... | |
 | George William Myers - 1910 - 304 σελίδες
...of a parallelogram is equal to the product of the base and altitude. (Use Exercise 2.) 5. Prove that the area of a triangle is one-half the product of the base and altitude. (Use Exercise 4 and Fig. 254.) Thus the area of a triangle can be computed if the base and the altitude... | |
 | 1911 - 192 σελίδες
...BA and CC' = CA. Show that the angle B'AC' equals half the sum of the angles B and C. 2. Prove that the area of a triangle is one-half the product of the base and the altitude. Show that if a point move about within a regular polygon, the sum of the perpendiculars... | |
 | Robert A. McMillan - 1912 - 378 σελίδες
...2 X 2' 9* X 5' 3* = 3 X 2 X 2| X 5J - 11 21 693 = 3 x 2 x-7 x -p = -s440 = 86-625 square feet Ans. The area of a triangle is one-half the product of the base and the height. To prove this, draw any triangle А О С through A and C, draw prependiculars AB and С... | |
 | Earle Bertram Norris, Kenneth Gardner Smith, Ralph Thurman Craigo - 1913 - 234 σελίδες
...for bolts of the following diameters: -fs in., J in., f in., 1 J in., and lj in. FIG. 5. Fio. 6. 3. The area of a triangle is one-half the product of the base by the altitude. Using the dimensions shown in Fig. 5, write a formula for the area and from it find... | |
 | Maximilian Philip - 1916 - 68 σελίδες
...one is a yds. long, how long is the other? 23. John has c dollars. He pays a dollars for a hat and 6 dollars for a coat. How much left? 24. I have x dimes....seconds it fell. [x2 is read "x square" and means x X x; a3 is read "a cube" and means axa X a] 27. The volume of a sphere is \ the cube of the radius,... | |
 | Matilda Auerbach, Charles Burton Walsh - 1920 - 408 σελίδες
...BB'=--BA and CC' = CA. Show that the angle B'AC' equals half the sum of the angles B and C. 2. Prove that the area of a triangle is one-half the product of the base and the altitude. 3. A rod 8 feet long is free to move within a rectangle 8 feet long and 6 feet wide.... | |
 | Mabel Sykes, Clarence Elmer Comstock - 1922 - 236 σελίδες
...altitude. THEOREM 113. The area of a parallelogram is the product of the base and altitude. THEOREM 114. The area of a triangle is one-half the product of the base and altitude. THEOREM 115. The area of a trapezoid is equal to one-half the product of the altitude and the sum of... | |
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The area of a triangle is one-half the product of the base and altitude. 
