 | George Albert Wentworth - Trigonometry - 1902 - 256 pages
...by logarithms as the value of 6 given under Case IV. See also p. 23. SECTION XIV AREA OF THE RIGHT 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,... | |
 | International Correspondence Schools - Cartography - 1903 - 846 pages
...altitudes are measured with the scale and the areas of the several triangles calculated by the rule : the area of a triangle is equal to one-half the product of its base and al/i/ude. 94—14 The sum of the areas of the several triangles is equal to the area of the polygon.... | |
 | George Albert Wentworth - Trigonometry - 1903 - 346 pages
...by logarithms as the value of b given under Case IV. See also p.. 23. SECTION XIV AREA OF THE RIGHT TRIANGLE The area of a triangle is equal to one-half the product of the base by the altitude; therefore, if a and 1, denote the legs of a right triangle, and F the area,... | |
 | George Albert Wentworth, George Anthony Hill - Logarithms - 1903 - 298 pages
...by logarithms as the value of 6 given under Case IV. See also p. 23. SECTION XIV AREA OF THE RIGHT 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,... | |
 | American School (Chicago, Ill.) - Engineering - 1903 - 390 pages
...and their bases equal to b and b' respectively. Then, area ABCD = area ABD + area BCD. But since the area of a triangle is equal to one-half the product of its base by its altitude, (Theorem LXV), area ABD = ^aX6, and area BCD = \ ax b'. Therefore, area ABCD = J«X... | |
 | George Albert Wentworth - Plane trigonometry - 1903 - 384 pages
...by logarithms as the value of 6 given under Case IV. See also p. 23. SECTION XIV AREA OF THE RIGHT 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,... | |
 | Fletcher Durell - Geometry, Solid - 1904 - 232 pages
...altitude. 385. The area of a parallelogram is equal to the product of its base by its altitude. 389. The area of a triangle is equal to one-half the product of its base by its altitude. 390. Triangles which have equal bases and equal altitudes (or which hare equal bases... | |
 | George Clinton Shutts - Geometry - 1905 - 410 pages
...product of its base and altitude. Suggestion. § 323 and § 326. PROPOSITION V. 331. Theorem. The area 0f a triangle is equal to one-half the product of its base and altitude. AMB CD Let ABC represent a triangle, AB its base, and MC its altitude. To prove that the area of the... | |
 | William Chauvenet - 1905 - 336 pages
...AD and DC respectively, the rectangle OD will be equivalent to one-half the rectangle ABCD. 6. The area of a triangle is equal to one-half the product of its perimeter by the radius of the inscribed circle. 7. The area of a rhombus is one-half the product of... | |
 | George Clinton Shutts - 1905 - 260 pages
...other, the square on the common chord is equal to three times the square on the radius. Ex. 450. The area of a triangle is equal to one-half the product of its perimeter by the radius of the inscribed circle. Ex. 451. What is the ratio of the areas of two similar... | |
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The area of a triangle is equal to one-half the product of its base and altitude. 
